O’ring Sizing

Sealing Australia stock a wide variety of standard and non-standard o’ring sizes.

O’ring Sizing

Sealing Australia stock a wide variety of standard and non-standard o’ring sizes. For standard sizing, please see tables below for sizing and tolerances.

Imperial sizes

British Standard BS1806 / American Aerospace Standard AS568A, SAE boss seals and extended range of imperial sized o’rings.

BS1806/AS568A

The most commonly found o’ring size standard, even in metric based machinery

0.070″ (1/16″ Nominal)

1.78mm Cross Section

Size Reference	ID (nom)	OD (nom)	CS (nom)	ID (inch)	±	CS (inch)	±	ID (mm)	±	CS (mm)	±
001	1/32	3/32	1/32	.029	.004	.040	.003	0.74	0.10	1.02	0.08
002	3/64	9/64	3/64	.042	.004	.050	.003	1.07	0.10	1.27	0.08
003	1/16	3/16	1/16	.056	.004	.060	.003	1.42	0.10	1.52	0.08
004	5/64	13/64	1/16	.070	.005	.070	.003	1.78	0.13	1.78	0.08
005	3/32	7/32	1/16	.101	.005	.070	.003	2.57	0.13	1.78	0.08
006	1/8	1/4	1/16	.114	.005	.070	.003	2.90	0.13	1.78	0.08
007	5/32	9/32	1/16	.145	.005	.070	.003	3.68	0.13	1.78	0.08
008	3/16	5/16	1/16	.176	.005	.070	.003	4.47	0.13	1.78	0.08
009	7/32	11/32	1/16	.208	.005	.070	.003	5.28	0.13	1.78	0.08
010	1/4	3/8	1/16	.239	.005	.070	.003	6.07	0.13	1.78	0.08
011	5/16	7/16	1/16	.301	.005	.070	.003	7.65	0.13	1.78	0.08
012	3/8	1/2	1/16	.364	.005	.070	.003	9.25	0.13	1.78	0.08
013	7/16	9/16	1/16	.426	.005	.070	.003	10.82	0.13	1.78	0.08
014	1/2	5/8	1/16	.489	.005	.070	.003	12.42	0.13	1.78	0.08
015	9/16	11/16	1/16	.551	.007	.070	.003	14.00	0.18	1.78	0.08
016	5/8	3/4	1/16	.614	.009	.070	.003	15.60	0.23	1.78	0.08
017	11/16	13/16	1/16	.676	.009	.070	.003	17.17	0.23	1.78	0.08
018	3/4	7/8	1/16	.739	.009	.070	.003	18.77	0.23	1.78	0.08
019	13/16	15/16	1/16	.801	.009	.070	.003	20.35	0.23	1.78	0.08
020	7/8	1	1/16	.864	.009	.070	.003	21.95	0.23	1.78	0.08
021	15/16	1-1/16	1/16	.926	.009	.070	.003	23.52	0.23	1.78	0.08
022	1	1-1/8	1/16	.989	.010	.070	.003	25.12	0.25	1.78	0.08
023	1-1/16	1-3/16	1/16	1.051	.010	.070	.003	26.70	0.25	1.78	0.08
024	1-1/8	1-1/4	1/16	1.114	.010	.070	.003	28.30	0.25	1.78	0.08
025	1-3/16	1-5/16	1/16	1.176	.011	.070	.003	29.87	0.28	1.78	0.08
026	1-1/4	1-3/8	1/16	1.239	.011	.070	.003	31.47	0.28	1.78	0.08
027	1-5/16	1-7/16	1/16	1.301	.011	.070	.003	33.05	0.28	1.78	0.08
028	1-3/8	1-1/2	1/16	1.364	.013	.070	.003	34.65	0.33	1.78	0.08
029	1-1/2	1-5/8	1/16	1.489	.013	.070	.003	37.82	0.33	1.78	0.08
030	1-5/8	1-3/4	1/16	1.614	.013	.070	.003	41.00	0.33	1.78	0.08
031	1-3/4	1-7/8	1/16	1.739	.015	.070	.003	44.17	0.38	1.78	0.08
032	1-7/8	2	1/16	1.864	.015	.070	.003	47.35	0.38	1.78	0.08
033	2	2-1/8	1/16	1.989	.018	.070	.003	50.52	0.46	1.78	0.08
034	2-1/8	2-1/4	1/16	2.114	.018	.070	.003	53.70	0.46	1.78	0.08
035	2-1/4	2-3/8	1/16	2.239	.018	.070	.003	56.87	0.46	1.78	0.08
036	2-3/8	2-1/2	1/16	2.364	.018	.070	.003	60.05	0.46	1.78	0.08
037	2-1/2	2-5/8	1/16	2.489	.018	.070	.003	63.22	0.46	1.78	0.08
038	2-5/8	2-3/4	1/16	2.614	.020	.070	.003	66.40	0.51	1.78	0.08
039	2-3/4	2-7/8	1/16	2.739	.020	.070	.003	69.57	0.51	1.78	0.08
040	2-7/8	3	1/16	2.864	.020	.070	.003	72.75	0.51	1.78	0.08
041	3	3-1/8	1/16	2.989	.024	.070	.003	75.92	0.61	1.78	0.08
042	3-1/4	3-3/8	1/16	3.239	.024	.070	.003	82.27	0.61	1.78	0.08
043	3-1/2	3-5/8	1/16	3.489	.024	.070	.003	88.62	0.61	1.78	0.08
044	3-3/4	3-7/8	1/16	3.739	.027	.070	.003	94.97	0.69	1.78	0.08
045	4	4-1/8	1/16	3.989	.027	.070	.003	101.32	0.69	1.78	0.08
046	4-1/4	4-3/8	1/16	4.239	.030	.070	.003	107.67	0.76	1.78	0.08
047	4-1/2	4-5/8	1/16	4.489	.030	.070	.003	114.02	0.76	1.78	0.08
048	4-3/4	4-7/8	1/16	4.739	.030	.070	.003	120.37	0.76	1.78	0.08
049	5	5-1/8	1/16	4.989	.037	.070	.003	126.72	0.94	1.78	0.08
050	5-1/4	5-3/8	1/16	5.239	.037	.070	.003	133.07	0.94	1.78	0.08

0.103” (3/32″ Nominal)

2.62mm Cross Section

Size Reference	ID (nom)	OD (nom)	CS (nom)	ID (inch)	±	CS (inch)	±	ID (mm)	±	CS (mm)	±
102	1/16	1/4	3/32	.049	.005	.103	.003	1.24	0.13	2.62	0.08
103	3/32	9/32	3/32	.081	.005	.103	.003	2.06	0.13	2.62	0.08
104	1/8	5/16	3/32	.112	.005	.103	.003	2.84	0.13	2.62	0.08
105	5/32	11/32	3/32	.143	.005	.103	.003	3.63	0.13	2.62	0.08
106	3/16	3/8	3/32	.174	.005	.103	.003	4.42	0.13	2.62	0.08
107	7/32	13/32	3/32	.206	.005	.103	.003	5.23	0.13	2.62	0.08
108	1/4	7/16	3/32	.237	.005	.103	.003	6.02	0.13	2.62	0.08
109	5/16	1/2	3/32	.299	.005	.103	.003	7.59	0.13	2.62	0.08
110	3/8	9/16	3/32	.362	.005	.103	.003	9.19	0.13	2.62	0.08
111	7/16	5/8	3/32	.424	.005	.103	.003	10.77	0.13	2.62	0.08
112	1/2	11/16	3/32	.487	.005	.103	.003	12.37	0.13	2.62	0.08
113	9/16	3/4	3/32	.549	.007	.103	.003	13.94	0.18	2.62	0.08
114	5/8	13/16	3/32	.612	.009	.103	.003	15.54	0.23	2.62	0.08
115	11/16	7/8	3/32	.674	.009	.103	.003	17.12	0.23	2.62	0.08
116	3/4	15/16	3/32	.737	.009	.103	.003	18.72	0.23	2.62	0.08
117	13/16	1	3/32	.799	.010	.103	.003	20.29	0.25	2.62	0.08
118	7/8	1-1/16	3/32	.862	.010	.103	.003	21.89	0.25	2.62	0.08
119	15/16	1-1/8	3/32	.924	.010	.103	.003	23.47	0.25	2.62	0.08
120	1	1-3/16	3/32	.987	.010	.103	.003	25.07	0.25	2.62	0.08
121	1-1/16	1-1/4	3/32	1.049	.010	.103	.003	26.64	0.25	2.62	0.08
122	1-1/8	1-5/16	3/32	1.112	.010	.103	.003	28.24	0.25	2.62	0.08
123	1-3/16	1-3/8	3/32	1.174	.012	.103	.003	29.82	0.30	2.62	0.08
124	1-1/4	1-7/16	3/32	1.237	.012	.103	.003	31.42	0.30	2.62	0.08
125	1-5/16	1-1/2	3/32	1.299	.012	.103	.003	32.99	0.30	2.62	0.08
126	1-3/8	1-9/16	3/32	1.362	.012	.103	.003	34.59	0.30	2.62	0.08
127	1-7/16	1-5/8	3/32	1.424	.012	.103	.003	36.17	0.30	2.62	0.08
128	1-1/2	1-11/16	3/32	1.487	.012	.103	.003	37.77	0.30	2.62	0.08
129	1-9/16	1-3/4	3/32	1.549	.015	.103	.003	39.34	0.38	2.62	0.08
130	1-5/8	1-13/16	3/32	1.612	.015	.103	.003	40.94	0.38	2.62	0.08
131	1-11/16	1-7/8	3/32	1.674	.015	.103	.003	42.52	0.38	2.62	0.08
132	1-3/4	1-15/16	3/32	1.737	.015	.103	.003	44.12	0.38	2.62	0.08
133	1-13/16	2	3/32	1.799	.015	.103	.003	45.69	0.38	2.62	0.08
134	1-7/8	2-1/16	3/32	1.862	.015	.103	.003	47.29	0.38	2.62	0.08
135	1-15/16	2-1/8	3/32	1.925	.017	.103	.003	48.90	0.43	2.62	0.08
136	2	2-3/16	3/32	1.987	.017	.103	.003	50.47	0.43	2.62	0.08
137	2-1/16	2-1/4	3/32	2.050	.017	.103	.003	52.07	0.43	2.62	0.08
138	2-1/8	2-5/16	3/32	2.112	.017	.103	.003	53.64	0.43	2.62	0.08
139	2-3/16	2-3/8	3/32	2.175	.017	.103	.003	55.25	0.43	2.62	0.08
140	2-1/4	2-7/16	3/32	2.237	.017	.103	.003	56.82	0.43	2.62	0.08
141	2-5/16	2-1/2	3/32	2.300	.020	.103	.003	58.42	0.51	2.62	0.08
142	2-3/8	2-9/16	3/32	2.362	.020	.103	.003	59.99	0.51	2.62	0.08
143	2-7/16	2-5/8	3/32	2.425	.020	.103	.003	61.60	0.51	2.62	0.08
144	2-1/2	2-11/16	3/32	2.487	.020	.103	.003	63.17	0.51	2.62	0.08
145	2-9/16	2-3/4	3/32	2.550	.020	.103	.003	64.77	0.51	2.62	0.08
146	2-5/8	2-13/16	3/32	2.612	.020	.103	.003	66.34	0.51	2.62	0.08
147	2-11/16	2-7/8	3/32	2.675	.022	.103	.003	67.95	0.56	2.62	0.08
148	2-3/4	2-15/16	3/32	2.737	.022	.103	.003	69.52	0.56	2.62	0.08
149	2-13/16	3	3/32	2.800	.022	.103	.003	71.12	0.56	2.62	0.08
150	2-7/8	3-1/16	3/32	2.862	.022	.103	.003	72.69	0.56	2.62	0.08
151	3	3-3/16	3/32	2.987	.024	.103	.003	75.87	0.61	2.62	0.08
152	3-1/4	3-7/16	3/32	3.237	.024	.103	.003	82.22	0.61	2.62	0.08
153	3-1/2	3-11/16	3/32	3.487	.024	.103	.003	88.57	0.61	2.62	0.08
154	3-3/4	3-15/16	3/32	3.737	.028	.103	.003	94.92	0.71	2.62	0.08
155	4	4-3/16	3/32	3.987	.028	.103	.003	101.27	0.71	2.62	0.08
156	4-1/4	4-7/16	3/32	4.237	.030	.103	.003	107.62	0.76	2.62	0.08
157	4-1/2	4-11/16	3/32	4.487	.030	.103	.003	113.97	0.76	2.62	0.08
158	4-3/4	4-15/16	3/32	4.737	.030	.103	.003	120.32	0.76	2.62	0.08
159	5	5-3/16	3/32	4.987	.035	.103	.003	126.67	0.89	2.62	0.08
160	5-1/4	5-7/16	3/32	5.237	.035	.103	.003	133.02	0.89	2.62	0.08
161	5-1/2	5-11/16	3/32	5.487	.035	.103	.003	139.37	0.89	2.62	0.08
162	5-3/4	5-15/16	3/32	5.737	.035	.103	.003	145.72	0.89	2.62	0.08
163	6	6-3/16	3/32	5.987	.035	.103	.003	152.07	0.89	2.62	0.08
164	6-1/4	6-7/16	3/32	6.237	.040	.103	.003	158.42	1.02	2.62	0.08
165	6-1/2	6-11/16	3/32	6.487	.040	.103	.003	164.77	1.02	2.62	0.08
166	6-3/4	6-15/16	3/32	6.737	.040	.103	.003	171.12	1.02	2.62	0.08
167	7	7-3/16	3/32	6.987	.040	.103	.003	177.47	1.02	2.62	0.08
168	7-1/4	7-7/16	3/32	7.237	.045	.103	.003	183.82	1.14	2.62	0.08
169	7-1/2	7-11/16	3/32	7.487	.045	.103	.003	190.17	1.14	2.62	0.08
170	7-3/4	7-15/16	3/32	7.737	.045	.103	.003	196.52	1.14	2.62	0.08
171	8	8-3/16	3/32	7.987	.045	.103	.003	202.87	1.14	2.62	0.08
172	8-1/4	8-7/16	3/32	8.237	.050	.103	.003	209.22	1.27	2.62	0.08
173	8-1/2	8-11/16	3/32	8.487	.050	.103	.003	215.57	1.27	2.62	0.08
174	8-3/4	8-15/16	3/32	8.737	.050	.103	.003	221.92	1.27	2.62	0.08
175	9	9-3/16	3/32	8.987	.050	.103	.003	228.27	1.27	2.62	0.08
176	9-1/4	9-7/16	3/32	9.237	.055	.103	.003	234.62	1.40	2.62	0.08
177	9-1/2	9-11/16	3/32	9.487	.055	.103	.003	240.97	1.40	2.62	0.08
178	9-3/4	9-15/16	3/32	9.737	.055	.103	.003	247.32	1.40	2.62	0.08

0.139” (1/8″ Nominal)

3.53mm Cross Section

Size Reference	ID (nom)	OD (nom)	CS (nom)	ID (inch)	±	CS (inch)	±	ID (mm)	±	CS (mm)	±
201	3/16	7/16	1/8	.171	.005	.139	.004	4.34	0.13	3.53	0.10
202	1/4	1/2	1/8	.234	.005	.139	.004	5.94	0.13	3.53	0.10
203	5/16	9/16	1/8	.296	.005	.139	.004	7.52	0.13	3.53	0.10
204	3/8	5/8	1/8	.359	.005	.139	.004	9.12	0.13	3.53	0.10
205	7/16	11/16	1/8	.421	.005	.139	.004	10.69	0.13	3.53	0.10
206	1/2	3/4	1/8	.484	.005	.139	.004	12.29	0.13	3.53	0.10
207	9/16	13/16	1/8	.546	.007	.139	.004	13.87	0.18	3.53	0.10
208	5/8	7/8	1/8	.609	.009	.139	.004	15.47	0.23	3.53	0.10
209	11/16	15/16	1/8	.671	.010	.139	.004	17.04	0.23	3.53	0.10
210	3/4	1	1/8	.734	.010	.139	.004	18.64	0.25	3.53	0.10
211	13/16	1-1/16	1/8	.796	.010	.139	.004	20.22	0.25	3.53	0.10
212	7/8	1-1/8	1/8	.859	.010	.139	.004	21.82	0.25	3.53	0.10
213	15/16	1-3/16	1/8	.921	.010	.139	.004	23.39	0.25	3.53	0.10
214	1	1-1/4	1/8	.984	.010	.139	.004	24.99	0.25	3.53	0.10
215	1-1/16	1-5/16	1/8	1.046	.010	.139	.004	26.57	0.25	3.53	0.10
216	1-1/8	1-3/8	1/8	1.109	.012	.139	.004	28.17	0.30	3.53	0.10
217	1-3/16	1-7/16	1/8	1.171	.012	.139	.004	29.74	0.30	3.53	0.10
218	1-1/4	1-1/2	1/8	1.234	.012	.139	.004	31.34	0.30	3.53	0.10
219	1-5/16	1-9/16	1/8	1.296	.012	.139	.004	32.92	0.30	3.53	0.10
220	1-3/8	1-5/8	1/8	1.359	.012	.139	.004	34.52	0.30	3.53	0.10
221	1-7/16	1-11/16	1/8	1.421	.012	.139	.004	36.09	0.30	3.53	0.10
222	1-1/2	1-3/4	1/8	1.484	.015	.139	.004	37.69	0.38	3.53	0.10
223	1-5/8	1-7/8	1/8	1.609	.015	.139	.004	40.87	0.38	3.53	0.10
224	1-3/4	2	1/8	1.734	.015	.139	.004	44.04	0.38	3.53	0.10
225	1-7/8	2-1/8	1/8	1.859	.018	.139	.004	47.22	0.46	3.53	0.10
226	2	2-1/4	1/8	1.984	.018	.139	.004	50.39	0.46	3.53	0.10
227	2-1/16	2-3/8	1/8	2.109	.018	.139	.004	53.57	0.46	3.53	0.10
228	2-1/4	2-1/2	1/8	2.234	.020	.139	.004	56.74	0.51	3.53	0.10
229	2-3/8	2-5/8	1/8	2.359	.020	.139	.004	59.92	0.51	3.53	0.10
230	2-1/2	2-3/4	1/8	2.484	.020	.139	.004	63.09	0.51	3.53	0.10
231	2-5/8	2-7/8	1/8	2.609	.020	.139	.004	66.27	0.51	3.53	0.10
232	2-3/4	3	1/8	2.734	.024	.139	.004	69.44	0.61	3.53	0.10
233	2-7/8	3-1/8	1/8	2.859	.024	.139	.004	72.62	0.61	3.53	0.10
234	3	3-1/4	1/8	2.984	.024	.139	.004	75.79	0.61	3.53	0.10
235	3-1/8	3-3/8	1/8	3.109	.024	.139	.004	78.97	0.61	3.53	0.10
236	3-1/4	3-1/2	1/8	3.234	.024	.139	.004	82.14	0.61	3.53	0.10
237	3-3/8	3-5/8	1/8	3.359	.024	.139	.004	85.32	0.61	3.53	0.10
238	3-1/2	3-3/4	1/8	3.484	.024	.139	.004	88.49	0.61	3.53	0.10
239	3-5/8	3-7/8	1/8	3.609	.028	.139	.004	91.67	0.71	3.53	0.10
240	3-7/8	4	1/8	3.734	.028	.139	.004	94.84	0.71	3.53	0.10
241	3-7/8	4-1/8	1/8	3.859	.028	.139	.004	98.02	0.71	3.53	0.10
242	4	4-1/4	1/8	3.984	.028	.139	.004	101.19	0.71	3.53	0.10
243	4-1/8	4-3/8	1/8	4.109	.028	.139	.004	104.37	0.71	3.53	0.10
244	4-1/4	4-1/2	1/8	4.234	.030	.139	.004	107.54	0.76	3.53	0.10
245	4-3/8	4-5/8	1/8	4.359	.030	.139	.004	110.72	0.76	3.53	0.10
246	4-1/2	4-3/4	1/8	4.484	.030	.139	.004	113.89	0.76	3.53	0.10
247	4-5/8	4-7/8	1/8	4.609	.030	.139	.004	117.07	0.76	3.53	0.10
248	4-3/4	5	1/8	4.734	.030	.139	.004	120.24	0.76	3.53	0.10
249	4-7/8	5-1/8	1/8	4.859	.035	.139	.004	123.42	0.89	3.53	0.10
250	5	5-1/4	1/8	4.984	.035	.139	.004	126.59	0.89	3.53	0.10
251	5-1/8	5-3/8	1/8	5.109	.035	.139	.004	129.77	0.89	3.53	0.10
252	5-1/4	5-1/2	1/8	5.234	.035	.139	.004	132.94	0.89	3.53	0.10
253	5-3/8	5-5/8	1/8	5.359	.035	.139	.004	136.12	0.89	3.53	0.10
254	5-1/2	5-3/4	1/8	5.484	.035	.139	.004	139.29	0.89	3.53	0.10
255	5-5/8	5-7/8	1/8	5.609	.035	.139	.004	142.47	0.89	3.53	0.10
256	5-3/4	6	1/8	5.734	.035	.139	.004	145.64	0.89	3.53	0.10
257	5-7/8	6-1/8	1/8	5.859	.035	.139	.004	148.82	0.89	3.53	0.10
258	6	6-1/4	1/8	5.984	.035	.139	.004	151.99	0.89	3.53	0.10
259	6-1/4	6-1/2	1/8	6.234	.040	.139	.004	158.34	1.02	3.53	0.10
260	6-1/2	6-3/4	1/8	6.484	.040	.139	.004	164.69	1.02	3.53	0.10
261	6-3/4	7	1/8	6.734	.040	.139	.004	171.04	1.02	3.53	0.10
262	7	7-1/4	1/8	6.984	.040	.139	.004	177.39	1.02	3.53	0.10
263	7-1/4	7-1/2	1/8	7.234	.045	.139	.004	183.74	1.14	3.53	0.10
264	7-1/2	7-3/4	1/8	7.484	.045	.139	.004	190.09	1.14	3.53	0.10
265	7-3/4	8	1/8	7.734	.045	.139	.004	196.44	1.14	3.53	0.10
266	8	8-1/4	1/8	7.984	.045	.139	.004	202.79	1.14	3.53	0.10
267	8-1/4	8-1/2	1/8	8.234	.050	.139	.004	209.14	1.27	3.53	0.10
268	8-1/2	8-3/4	1/8	8.484	.050	.139	.004	215.49	1.27	3.53	0.10
269	8-3/4	9	1/8	8.734	.050	.139	.004	221.84	1.27	3.53	0.10
270	9	9-1/4	1/8	8.984	.050	.139	.004	228.19	1.27	3.53	0.10
271	9-1/4	9-1/2	1/8	9.234	.055	.139	.004	234.54	1.40	3.53	0.10
272	9-1/2	9-3/4	1/8	9.484	.055	.139	.004	240.89	1.40	3.53	0.10
273	9-3/4	10	1/8	9.734	.055	.139	.004	247.24	1.40	3.53	0.10
274	10	10-1/4	1/8	9.984	.055	.139	.004	253.59	1.40	3.53	0.10
275	10-1/2	10-3/4	1/8	10.484	.055	.139	.004	266.29	1.40	3.53	0.10
276	11	11-1/4	1/8	10.984	.065	.139	.004	278.99	1.65	3.53	0.10
277	11-1/2	11-3/4	1/8	11.484	.065	.139	.004	291.69	1.65	3.53	0.10
278	12	12-1/4	1/8	11.984	.065	.139	.004	304.39	1.65	3.53	0.10
279	13	13-1/4	1/8	12.984	.065	.139	.004	329.79	1.65	3.53	0.10
280	14	14-1/4	1/8	13.984	.065	.139	.004	355.19	1.65	3.53	0.10
281	15	15-1/4	1/8	14.984	.065	.139	.004	380.59	1.65	3.53	0.10
282	16	16-1/4	1/8	15.955	.075	.139	.004	405.26	1.91	3.53	0.10
283	17	17-1/4	1/8	16.955	.080	.139	.004	430.66	2.03	3.53	0.10
284	18	18-1/4	1/8	17.955	.085	.139	.004	456.06	2.16	3.53	0.10

0.210” (3/16″ Nominal)

5.33mm Cross Section

Size Reference	ID (nom)	OD (nom)	CS (nom)	ID (inch)	±	CS (inch)	±	ID (mm)	±	CS (mm)	±
309	7/16	13/16	3/16	.412	.005	.210	.005	10.46	0.13	5.33	0.13
310	1/2	7/8	3/16	.475	.005	.210	.005	12.07	0.13	5.33	0.13
311	9/16	15/16	3/16	.537	.007	.210	.005	13.64	0.18	5.33	0.13
312	5/8	1	3/16	.600	.009	.210	.005	15.24	0.23	5.33	0.13
313	11/16	1-1/16	3/16	.662	.009	.210	.005	16.81	0.23	5.33	0.13
314	3/4	1-1/8	3/16	.725	.010	.210	.005	18.42	0.25	5.33	0.13
315	13/16	1-3/16	3/16	.787	.010	.210	.005	19.99	0.25	5.33	0.13
316	7/8	1-1/4	3/16	.850	.010	.210	.005	21.59	0.25	5.33	0.13
317	15/16	1-5/16	3/16	.912	.010	.210	.005	23.16	0.25	5.33	0.13
318	1	1-3/8	3/16	.975	.010	.210	.005	24.77	0.25	5.33	0.13
319	1-1/16	1-7/16	3/16	1.037	.010	.210	.005	26.34	0.25	5.33	0.13
320	1-1/8	1-1/2	3/16	1.100	.012	.210	.005	27.94	0.30	5.33	0.13
321	1-3/16	1-9/16	3/16	1.162	.012	.210	.005	29.51	0.30	5.33	0.13
322	1-1/4	1-5/8	3/16	1.225	.012	.210	.005	31.12	0.30	5.33	0.13
323	1-5/16	1-11/16	3/16	1.287	.012	.210	.005	32.69	0.30	5.33	0.13
324	1-3/8	1-3/4	3/16	1.350	.012	.210	.005	34.29	0.30	5.33	0.13
325	1-1/2	1-7/8	3/16	1.475	.015	.210	.005	37.47	0.38	5.33	0.13
326	1-5/8	2	3/16	1.600	.015	.210	.005	40.64	0.38	5.33	0.13
327	1-3/4	2-1/8	3/16	1.725	.015	.210	.005	43.82	0.38	5.33	0.13
328	1-7/8	2-1/4	3/16	1.850	.015	.210	.005	46.99	0.38	5.33	0.13
329	2	2-3/8	3/16	1.975	.018	.210	.005	50.17	0.46	5.33	0.13
330	2-1/8	2-1/2	3/16	2.100	.018	.210	.005	53.34	0.46	5.33	0.13
331	2-1/4	2-5/8	3/16	2.225	.018	.210	.005	56.52	0.46	5.33	0.13
332	2-3/8	2-3/4	3/16	2.350	.018	.210	.005	59.69	0.46	5.33	0.13
333	2-1/2	2-7/8	3/16	2.475	.020	.210	.005	62.87	0.51	5.33	0.13
334	2-5/8	3	3/16	2.600	.020	.210	.005	66.04	0.51	5.33	0.13
335	2-3/4	3-1/8	3/16	2.725	.020	.210	.005	69.22	0.51	5.33	0.13
336	2-7/8	3-1/4	3/16	2.850	.020	.210	.005	72.39	0.51	5.33	0.13
337	3	3-3/8	3/16	2.975	.024	.210	.005	75.57	0.61	5.33	0.13
338	3-1/8	3-1/2	3/16	3.100	.024	.210	.005	78.74	0.61	5.33	0.13
339	3-1/4	3-5/8	3/16	3.225	.024	.210	.005	81.92	0.61	5.33	0.13
340	3-3/8	3-3/4	3/16	3.350	.024	.210	.005	85.09	0.61	5.33	0.13
341	3-1/2	3-7/8	3/16	3.475	.024	.210	.005	88.27	0.61	5.33	0.13
342	3-5/8	4	3/16	3.600	.028	.210	.005	91.44	0.71	5.33	0.13
343	3-3/4	4-1/8	3/16	3.725	.028	.210	.005	94.62	0.71	5.33	0.13
344	3-7/8	4-1/4	3/16	3.850	.028	.210	.005	97.79	0.71	5.33	0.13
345	4	4-3/8	3/16	3.975	.028	.210	.005	100.97	0.71	5.33	0.13
346	4-1/8	4-1/2	3/16	4.100	.028	.210	.005	104.14	0.71	5.33	0.13
347	4-1/4	4-5/8	3/16	4.225	.030	.210	.005	107.32	0.76	5.33	0.13
348	4-3/8	4-3/4	3/16	4.350	.030	.210	.005	110.49	0.76	5.33	0.13
349	4-1/2	4-7/8	3/16	4.475	.030	.210	.005	113.67	0.76	5.33	0.13
350	4-5/8	5	3/16	4.600	.030	.210	.005	116.84	0.76	5.33	0.13
351	4-3/4	5-1/8	3/16	4.725	.030	.210	.005	120.02	0.76	5.33	0.13
352	4-7/8	5-1/4	3/16	4.850	.030	.210	.005	123.19	0.76	5.33	0.13
353	5	5-3/8	3/16	4.975	.037	.210	.005	126.37	0.94	5.33	0.13
354	5.1/8	5-1/2	3/16	5.100	.037	.210	.005	129.54	0.94	5.33	0.13
355	5-1/4	5-5/8	3/16	5.225	.037	.210	.005	132.72	0.94	5.33	0.13
356	5-3/8	5-3/4	3/16	5.350	.037	.210	.005	135.89	0.94	5.33	0.13
357	5-1/2	5-7/8	3/16	5.475	.037	.210	.005	139.07	0.94	5.33	0.13
358	5-5/8	6	3/16	5.600	.037	.210	.005	142.24	0.94	5.33	0.13
359	5-3/4	6-1/8	3/16	5.725	.037	.210	.005	145.42	0.94	5.33	0.13
360	5-7/8	6-1/4	3/16	5.850	.037	.210	.005	148.59	0.94	5.33	0.13
361	6	6-3/8	3/16	5.975	.037	.210	.005	151.77	0.94	5.33	0.13
362	6-1/4	6-5/8	3/16	6.225	.040	.210	.005	158.12	1.02	5.33	0.13
363	6-1/2	6-7/8	3/16	6.475	.040	.210	.005	164.47	1.02	5.33	0.13
364	6.3/4	7-1/8	3/16	6.725	.040	.210	.005	170.82	1.02	5.33	0.13
365	7	7-3/8	3/16	6.975	.040	.210	.005	177.17	1.02	5.33	0.13
366	7-1/4	7-5/8	3/16	7.225	.045	.210	.005	183.52	1.14	5.33	0.13
367	7-1/2	7-7/8	3/16	7.475	.045	.210	.005	189.87	1.14	5.33	0.13
368	7-3/4	8-1/8	3/16	7.725	.045	.210	.005	196.22	1.14	5.33	0.13
369	8	8-3/8	3/16	7.975	.045	.210	.005	202.57	1.14	5.33	0.13
370	8-1/4	8-5/8	3/16	8.225	.050	.210	.005	208.92	1.27	5.33	0.13
371	8-1/2	8-7/8	3/16	8.475	.050	.210	.005	215.27	1.27	5.33	0.13
372	8-3/4	9-1/8	3/16	8.725	.050	.210	.005	221.62	1.27	5.33	0.13
373	9	9-3/8	3/16	8.975	.050	.210	.005	227.97	1.27	5.33	0.13
374	9-1/4	9-5/8	3/16	9.225	.055	.210	.005	234.32	1.40	5.33	0.13
375	9-1/2	9-7/8	3/16	9.475	.055	.210	.005	240.67	1.40	5.33	0.13
376	9-3/4	10-1/8	3/16	9.725	.055	.210	.005	247.02	1.40	5.33	0.13
377	10	10-3/8	3/16	9.975	.055	.210	.005	253.37	1.40	5.33	0.13
378	10-1/2	10-7/8	3/16	10.475	.060	.210	.005	266.07	1.52	5.33	0.13
379	11	11-3/8	3/16	10.975	.060	.210	.005	278.77	1.52	5.33	0.13
380	11-1/2	11-7/8	3/16	11.475	.065	.210	.005	291.47	1.65	5.33	0.13
381	12	12-3/8	3/16	11.975	.065	.210	.005	304.17	1.65	5.33	0.13
382	13	13-3/8	3/16	12.975	.065	.210	.005	329.57	1.65	5.33	0.13
383	14	14-3/8	3/16	13.975	.070	.210	.005	354.97	1.78	5.33	0.13
384	15	15-3/8	3/16	14.975	.070	.210	.005	380.37	1.78	5.33	0.13
385	16	16-3/8	3/16	15.955	.075	.210	.005	405.26	1.91	5.33	0.13
386	17	17-3/8	3/16	16.955	.080	.210	.005	430.66	2.03	5.33	0.13
387	18	18-3/8	3/16	17.955	.085	.210	.005	456.06	2.16	5.33	0.13
388	19	19-3/8	3/16	18.955	.090	.210	.005	481.46	2.29	5.33	0.13
389	20	20-3/8	3/16	19.955	.095	.210	.005	506.86	2.41	5.33	0.13
390	21	21-3/8	3/16	20.955	.095	.210	.005	532.26	2.41	5.33	0.13
391	22	22-3/8	3/16	21.955	.100	.210	.005	557.66	2.54	5.33	0.13
392	23	23-3/8	3/16	22.940	.105	.210	.005	582.68	2.67	5.33	0.13
393	24	24-3/8	3/16	23.940	.110	.210	.005	608.08	2.79	5.33	0.13
394	25	25-3/8	3/16	24.940	.115	.210	.005	633.48	2.92	5.33	0.13
395	26	26-3/8	3/16	25.940	.120	.210	.005	658.88	3.05	5.33	0.13

0.275” (1/4″ Nominal)

6.99mm Cross Section

Size Reference	ID (nom)	OD (nom)	CS (nom)	ID (inch)	±	CS (inch)	±	ID (mm)	±	CS (mm)	±
400	1-3/8	1-7/8	1/4	1.350	.012	.275	.006	34.29	0.30	6.99	0.15
401	1-1/2	2	1/4	1.475	.014	.275	.006	37.47	0.36	6.99	0.15
402	1-5/8	2-1/8	1/4	1.600	.015	.275	.006	40.64	0.38	6.99	0.15
403	1-3/4	2-1/4	1/4	1.725	.016	.275	.006	43.82	0.41	6.99	0.15
404	1-7/8	2-3/8	1/4	1.850	.016	.275	.006	46.99	0.41	6.99	0.15
405	2	2-1/2	1/4	1.975	.017	.275	.006	50.17	0.43	6.99	0.15
406	2-1/8	2-5/8	1/4	2.100	.018	.275	.006	53.34	0.46	6.99	0.15
407	2-1/4	2-3/4	1/4	2.225	.018	.275	.006	56.52	0.46	6.99	0.15
408	2-3/8	2-7/8	1/4	2.350	.020	.275	.006	59.69	0.51	6.99	0.15
409	2-1/2	3	1/4	2.475	.020	.275	.006	62.87	0.51	6.99	0.15
410	2-5/8	3-1/8	1/4	2.600	.020	.275	.006	66.04	0.51	6.99	0.15
411	2-3/4	3-1/4	1/4	2.725	.022	.275	.006	69.22	0.56	6.99	0.15
412	2-7/8	3-3/8	1/4	2.850	.022	.275	.006	72.39	0.56	6.99	0.15
413	3	3-1/2	1/4	2.975	.024	.275	.006	75.57	0.61	6.99	0.15
414	3-1/8	3-5/8	1/4	3.100	.024	.275	.006	78.74	0.61	6.99	0.15
415	3-1/4	3-3/4	1/4	3.225	.024	.275	.006	81.92	0.61	6.99	0.15
416	3-3/8	3-7/8	1/4	3.350	.026	.275	.006	85.09	0.66	6.99	0.15
417	3-1/2	4	1/4	3.475	.026	.275	.006	88.27	0.66	6.99	0.15
418	3-5/8	4-1/8	1/4	3.600	.026	.275	.006	91.44	0.66	6.99	0.15
419	3-3/4	4-1/4	1/4	3.725	.028	.275	.006	94.62	0.71	6.99	0.15
420	3-7/8	4-3/8	1/4	3.850	.028	.275	.006	97.79	0.71	6.99	0.15
421	4	4-1/2	1/4	3.975	.028	.275	.006	100.97	0.71	6.99	0.15
422	4-1/8	4-5/8	1/4	4.100	.030	.275	.006	104.14	0.76	6.99	0.15
423	4-1/4	4-3/4	1/4	4.225	.030	.275	.006	107.32	0.76	6.99	0.15
424	4-3/8	4-7/8	1/4	4.350	.030	.275	.006	110.49	0.76	6.99	0.15
425	4-1/2	5	1/4	4.475	.033	.275	.006	113.67	0.84	6.99	0.15
426	4-5/8	5-1/8	1/4	4.600	.033	.275	.006	116.84	0.84	6.99	0.15
427	4-3/4	5-1/4	1/4	4.725	.033	.275	.006	120.02	0.84	6.99	0.15
428	4-7/8	5-3/8	1/4	4.850	.033	.275	.006	123.19	0.84	6.99	0.15
429	5	5-1/2	1/4	4.975	.037	.275	.006	126.37	0.94	6.99	0.15
430	5-1/8	5-5/8	1/4	5.100	.037	.275	.006	129.54	0.94	6.99	0.15
431	5-1/4	5-3/4	1/4	5.225	.037	.275	.006	132.72	0.94	6.99	0.15
432	5-3/8	5-7/8	1/4	5.350	.037	.275	.006	135.89	0.94	6.99	0.15
433	5-1/2	6	1/4	5.475	.037	.275	.006	139.07	0.94	6.99	0.15
434	5-5/8	6-1/8	1/4	5.600	.037	.275	.006	142.24	0.94	6.99	0.15
435	5-3/4	6-1/4	1/4	5.725	.037	.275	.006	145.42	0.94	6.99	0.15
436	5-7/8	6-3/8	1/4	5.850	.037	.275	.006	148.59	0.94	6.99	0.15
437	6	6-1/2	1/4	5.975	.037	.275	.006	151.77	0.94	6.99	0.15
438	6-1/4	6-3/4	1/4	6.225	.040	.275	.006	158.12	1.02	6.99	0.15
439	6-1/2	7	1/4	6.475	.040	.275	.006	164.47	1.02	6.99	0.15
440	6-3/4	7-1/4	1/4	6.725	.040	.275	.006	170.82	1.02	6.99	0.15
441	7	7-1/2	1/4	6.975	.040	.275	.006	177.17	1.02	6.99	0.15
442	7-1/4	7-3/4	1/4	7.225	.045	.275	.006	183.52	1.14	6.99	0.15
443	7-1/2	8	1/4	7.475	.045	.275	.006	189.87	1.14	6.99	0.15
444	7-3/4	8-1/4	1/4	7.725	.045	.275	.006	196.22	1.14	6.99	0.15
445	8	8-1/2	1/4	7.975	.045	.275	.006	202.57	1.14	6.99	0.15
446	8-1/2	9	1/4	8.475	.055	.275	.006	215.27	1.40	6.99	0.15
447	9	9-1/2	1/4	8.975	.055	.275	.006	227.97	1.40	6.99	0.15
448	9-1/2	10	1/4	9.475	.055	.275	.006	240.67	1.40	6.99	0.15
449	10	10-1/2	1/4	9.975	.055	.275	.006	253.37	1.40	6.99	0.15
450	10-1/2	11	1/4	10.475	.060	.275	.006	266.07	1.52	6.99	0.15
451	11	11-1/2	1/4	10.975	.060	.275	.006	278.77	1.52	6.99	0.15
452	11-1/2	12	1/4	11.475	.060	.275	.006	291.47	1.52	6.99	0.15
453	12	12-1/2	1/4	11.975	.060	.275	.006	304.17	1.52	6.99	0.15
454	12-1/2	13	1/4	12.475	.060	.275	.006	316.87	1.52	6.99	0.15
455	13	13-1/2	1/4	12.975	.060	.275	.006	329.57	1.52	6.99	0.15
456	13-1/2	14	1/4	13.475	.070	.275	.006	342.27	1.78	6.99	0.15
457	14	14-1/2	1/4	13.975	.070	.275	.006	354.97	1.78	6.99	0.15
458	14-1/2	15	1/4	14.475	.070	.275	.006	367.67	1.78	6.99	0.15
459	15	15-1/2	1/4	14.975	.070	.275	.006	380.37	1.78	6.99	0.15
460	15-1/2	16	1/4	15.475	.070	.275	.006	393.07	1.78	6.99	0.15
461	16	16-1/2	1/4	15.955	.075	.275	.006	405.26	1.91	6.99	0.15
462	16-1/2	17	1/4	16.455	.075	.275	.006	417.96	1.91	6.99	0.15
463	17	17-1/2	1/4	16.955	.080	.275	.006	430.66	2.03	6.99	0.15
464	17-1/2	18	1/4	17.455	.085	.275	.006	443.36	2.16	6.99	0.15
465	18	18-1/2	1/4	17.955	.085	.275	.006	456.06	2.16	6.99	0.15
466	18-1/2	19	1/4	18.455	.085	.275	.006	468.76	2.16	6.99	0.15
467	19	19-1/2	1/4	18.955	.090	.275	.006	481.46	2.29	6.99	0.15
468	19-1/2	20	1/4	19.455	.090	.275	.006	494.16	2.29	6.99	0.15
469	20	20-1/2	1/4	19.955	.095	.275	.006	506.86	2.41	6.99	0.15
470	21	21-1/2	1/4	20.955	.095	.275	.006	532.26	2.41	6.99	0.15
471	22	22-1/2	1/4	21.955	.100	.275	.006	557.66	2.54	6.99	0.15
472	23	23-1/2	1/4	22.940	.105	.275	.006	582.68	2.67	6.99	0.15
473	24	24-1/2	1/4	23.940	.110	.275	.006	608.08	2.79	6.99	0.15
474	25	25-1/2	1/4	24.940	.115	.275	.006	633.48	2.92	6.99	0.15
475	26	26-1/2	1/4	25.940	.120	.275	.006	658.88	3.05	6.99	0.15

SAE Straight Thread Boss Seals

Size Reference	Tube OD (nom)	ID (inch)	±	CS (inch)	±	ID (mm)	±	CS (mm)	±
901	3/32	.185	.005	.056	.003	4.70	0.13	1.42	0.08
902	1/8	.239	.005	.064	.003	6.07	0.13	1.63	0.08
903	3/16	.301	.005	.064	.003	7.65	0.13	1.63	0.08
904	1/4	.351	.005	.072	.003	8.92	0.13	1.83	0.08
905	5/16	.414	.005	.072	.003	10.52	0.13	1.83	0.08
906	3/8	.468	.005	.078	.003	11.89	0.13	1.98	0.08
907	7/16	.530	.007	.082	.003	13.46	0.18	2.08	0.08
908	1/2	.644	.009	.087	.003	16.36	0.23	2.21	0.08
909	9/16	.706	.009	.097	.003	17.93	0.23	2.46	0.08
910	5/8	.755	.009	.097	.003	19.18	0.23	2.46	0.08
911	11/16	.863	.009	.116	.004	21.92	0.23	2.95	0.10
912	3/4	.924	.009	.116	.004	23.47	0.23	2.95	0.10
913	13/16	.986	.010	.116	.004	25.04	0.26	2.95	0.10
914	7/8	1.047	.010	.116	.004	26.59	0.26	2.95	0.10
916	1	1.171	.010	.116	.004	29.74	0.26	2.95	0.10
918	1-1/8	1.355	.012	.116	.004	32.42	0.30	2.95	0.10
920	1-1/4	1.475	.014	.118	.004	37.47	0.36	3.00	0.10
924	1-1/2	1.720	.014	.118	.004	43.69	0.36	3.00	0.10
928	1-3/4	2.090	.018	.118	.004	53.09	0.46	3.00	0.10
932	2	2.337	.018	.118	.004	59.36	0.46	3.00	0.10

BS Extended Range

Featuring in-between and extended range of imperial sizes based off the BS1806 standard.

BS Extended Range O’rings

Size Ref	ID (inch)	±	CS (inch)	±	ID (mm)	±	CS (mm)	±
1.02mm CS	–	–	–	–	–	–	–	–
606	0.070	0.005	0.040	0.003	1.78	0.13	1.02	0.08
1.78mm CS	–	–	–	–	–	–	–	–
801	0.125	0.005	0.070	0.003	3.17	0.13	1.78	0.08
802	0.187	0.005	0.070	0.003	4.76	0.13	1.78	0.08
803	0.250	0.005	0.070	0.003	6.35	0.13	1.78	0.08
610	0.266	0.005	0.070	0.003	6.75	0.13	1.78	0.08
804	0.313	0.005	0.070	0.003	7.94	0.13	1.78	0.08
611	0.343	0.005	0.070	0.003	8.73	0.13	1.78	0.08
806	0.437	0.005	0.070	0.003	11.11	0.13	1.78	0.08
517	1.427	0.014	0.070	0.003	36.27	0.36	1.78	0.08
519	1.553	0.015	0.070	0.003	39.45	0.38	1.78	0.08
532	3.110	0.024	0.070	0.003	79.00	0.61	1.78	0.08
534	3.360	0.026	0.070	0.003	85.34	0.66	1.78	0.08
536	3.610	0.026	0.070	0.003	91.70	0.66	1.78	0.08
538	3.860	0.028	0.070	0.003	98.05	0.71	1.78	0.08
540	4.110	0.030	0.070	0.003	104.40	0.76	1.78	0.08
542	4.360	0.030	0.070	0.003	110.74	0.76	1.78	0.08
544	4.610	0.033	0.070	0.003	117.10	0.84	1.78	0.08
546	4.860	0.035	0.070	0.003	123.44	0.89	1.78	0.08
548	5.094	0.035	0.070	0.003	129.40	0.89	1.78	0.08
550	5.345	0.035	0.070	0.003	135.76	0.89	1.78	0.08
551	5.470	0.035	0.070	0.003	138.94	0.89	1.78	0.08
552	5.595	0.040	0.070	0.003	142.11	1.02	1.78	0.08
553	5.720	0.040	0.070	0.003	145.29	1.02	1.78	0.08
554	5.845	0.040	0.070	0.003	148.46	1.02	1.78	0.08
555	5.970	0.040	0.070	0.003	151.64	1.02	1.78	0.08
556	6.095	0.040	0.070	0.003	154.81	1.02	1.78	0.08
557	6.220	0.040	0.070	0.003	158.00	1.02	1.78	0.08
558	6.345	0.040	0.070	0.003	161.16	1.02	1.78	0.08
559	6.470	0.040	0.070	0.003	164.34	1.02	1.78	0.08
560	6.595	0.045	0.070	0.003	167.51	1.14	1.78	0.08
561	6.720	0.045	0.070	0.003	170.69	1.14	1.78	0.08
562	6.845	0.045	0.070	0.003	173.87	1.14	1.78	0.08
2.62mm CS	–	–	–	–	–	–	–	–
613	0.389	0.005	0.103	0.003	9.90	0.13	2.62	0.08
614	0.469	0.006	0.103	0.003	11.91	0.15	2.62	0.08
807	0.500	0.006	0.103	0.003	12.70	0.15	2.62	0.08
615	0.516	0.006	0.103	0.003	13.10	0.15	2.62	0.08
616	0.594	0.007	0.103	0.003	15.08	0.18	2.62	0.08
809	0.625	0.007	0.103	0.003	15.88	0.18	2.62	0.08
810	0.687	0.008	0.103	0.003	17.46	0.20	2.62	0.08
617	0.703	0.008	0.103	0.003	17.86	0.20	2.62	0.08
812	0.813	0.009	0.103	0.003	20.64	0.23	2.62	0.08
813	0.875	0.009	0.103	0.003	22.23	0.23	2.62	0.08
814	0.937	0.010	0.103	0.003	23.81	0.25	2.62	0.08
640	2.925	0.022	0.103	0.003	74.30	0.56	2.62	0.08
641	3.051	0.024	0.103	0.003	77.50	0.61	2.62	0.08
642	3.173	0.024	0.103	0.003	80.60	0.61	2.62	0.08
643	3.299	0.026	0.103	0.003	83.80	0.66	2.62	0.08
3.53mm CS	–	–	–	–	–	–	–	–
618	1.016	0.010	0.139	0.004	25.80	0.25	3.53	0.10
824	1.563	0.015	0.139	0.004	39.70	0.38	3.53	0.10
825	1.625	0.015	0.139	0.004	41.28	0.38	3.53	0.10
826	1.687	0.015	0.139	0.004	42.86	0.38	3.53	0.10
827	1.750	0.016	0.139	0.004	44.45	0.41	3.53	0.10
828	1.813	0.016	0.139	0.004	46.04	0.41	3.53	0.10
829	1.875	0.017	0.139	0.004	47.62	0.43	3.53	0.10
830	1.937	0.017	0.139	0.004	49.20	0.43	3.53	0.10
831	2.000	0.018	0.139	0.004	50.80	0.46	3.53	0.10
832	2.063	0.018	0.139	0.004	52.40	0.46	3.53	0.10
833	2.125	0.018	0.139	0.004	53.97	0.46	3.53	0.10
834	2.187	0.018	0.139	0.004	55.56	0.46	3.53	0.10
835	2.250	0.020	0.139	0.004	57.15	0.51	3.53	0.10
836	2.313	0.020	0.139	0.004	58.74	0.51	3.53	0.10
837	2.375	0.020	0.139	0.004	60.32	0.51	3.53	0.10
838	2.437	0.020	0.139	0.004	61.90	0.51	3.53	0.10
839	2.500	0.020	0.139	0.004	63.50	0.51	3.53	0.10
840	2.563	0.020	0.139	0.004	65.10	0.51	3.53	0.10
841	2.625	0.022	0.139	0.004	66.67	0.56	3.53	0.10
842	2.687	0.022	0.139	0.004	68.26	0.56	3.53	0.10
843	2.750	0.022	0.139	0.004	69.85	0.56	3.53	0.10
844	2.813	0.022	0.139	0.004	71.44	0.56	3.53	0.10
845	2.875	0.022	0.139	0.004	73.02	0.56	3.53	0.10
846	2.937	0.022	0.139	0.004	74.60	0.56	3.53	0.10
5.33mm CS	–	–	–	–	–	–	–	–
619	2.938	0.022	0.210	0.005	74.63	0.56	5.33	0.13
620	3.139	0.024	0.210	0.005	79.73	0.61	5.33	0.13
621	3.531	0.026	0.210	0.005	89.69	0.66	5.33	0.13
622	3.937	0.028	0.210	0.005	100.00	0.71	5.33	0.13
623	4.313	0.030	0.210	0.005	109.54	0.76	5.33	0.13
860	4.625	0.033	0.210	0.005	117.48	0.84	5.33	0.13
861	4.750	0.035	0.210	0.005	120.65	0.89	5.33	0.13
862	4.875	0.035	0.210	0.005	123.83	0.89	5.33	0.13
863	5.000	0.035	0.210	0.005	127.00	0.89	5.33	0.13
864	5.125	0.035	0.210	0.005	130.18	0.89	5.33	0.13
865	5.250	0.035	0.210	0.005	133.35	0.89	5.33	0.13
866	5.375	0.035	0.210	0.005	136.53	0.89	5.33	0.13
867	5.500	0.035	0.210	0.005	139.70	0.89	5.33	0.13
868	5.625	0.040	0.210	0.005	142.88	1.02	5.33	0.13
869	5.750	0.040	0.210	0.005	146.05	1.02	5.33	0.13
870	5.875	0.040	0.210	0.005	149.23	1.02	5.33	0.13
644	6.102	0.040	0.210	0.005	155.00	1.02	5.33	0.13
645	6.350	0.040	0.210	0.005	161.30	1.02	5.33	0.13
646	6.602	0.045	0.210	0.005	167.70	1.14	5.33	0.13
647	6.850	0.045	0.210	0.005	174.00	1.14	5.33	0.13
6.99mm CS	–	–	–	–	–	–	–	–
624	4.516	0.030	0.275	0.006	114.70	0.76	6.99	0.15
625	4.906	0.035	0.275	0.006	124.60	0.89	6.99	0.15
626	5.295	0.035	0.275	0.006	134.50	0.89	6.99	0.15
872	6.126	0.040	0.275	0.006	155.60	1.02	6.99	0.15
627	6.280	0.040	0.275	0.006	159.50	1.02	6.99	0.15
874	5.587	0.040	0.275	0.006	161.90	1.02	6.99	0.15
628	6.563	0.045	0.275	0.006	166.70	1.14	6.99	0.15
876	6.626	0.045	0.275	0.006	168.30	1.14	6.99	0.15
878	6.874	0.045	0.275	0.006	174.60	1.14	6.99	0.15
880	7.126	0.045	0.275	0.006	181.00	1.14	6.99	0.15
882	7.374	0.045	0.275	0.006	187.30	1.14	6.99	0.15
884	7.626	0.050	0.275	0.006	193.70	1.27	6.99	0.15
886	7.874	0.050	0.275	0.006	200.00	1.27	6.99	0.15
674	8.225	0.050	0.275	0.006	208.92	1.27	6.99	0.15
676	8.725	0.050	0.275	0.006	221.62	1.27	6.99	0.15
678	9.225	0.055	0.275	0.006	234.32	1.40	6.99	0.15
680	9.724	0.055	0.275	0.006	247.00	1.40	6.99	0.15
682	10.224	0.060	0.275	0.006	259.70	1.52	6.99	0.15
684	10.724	0.060	0.275	0.006	272.40	1.52	6.99	0.15
686	11.224	0.060	0.275	0.006	285.10	1.52	6.99	0.15
688	11.724	0.070	0.275	0.006	297.80	1.78	6.99	0.15
648	12.224	0.070	0.275	0.006	310.50	1.78	6.99	0.15
649	12.724	0.070	0.275	0.006	323.20	1.78	6.99	0.15
650	13.224	0.070	0.275	0.006	335.90	1.78	6.99	0.15

Metric sizes

Japanese Industrial Standard as per the Japanese Standards Association.

JIS B 2401 Piston (P)

Size Reference	ID (mm)	±	CS (mm)	±	ID (inch)	±	CS (inch)	±
P3	2.8	0.14	1.9	0.08	.110	.006	.075	.003
P4	3.8	0.14	1.9	0.08	.150	.006	.075	.003
P5	4.8	0.15	1.9	0.08	.189	.006	.075	.003
P6	5.8	0.15	1.9	0.08	.228	.006	.075	.003
P7	6.8	0.16	1.9	0.08	.268	.006	.075	.003
P8	7.8	0.16	1.9	0.08	.307	.006	.075	.003
P9	8.8	0.17	1.9	0.08	.346	.007	.075	.003
P10	9.8	0.17	1.9	0.08	.386	.007	.075	.003
P10A	9.8	0.17	2.4	0.09	.386	.007	.094	.004
P11	10.8	0.18	2.4	0.09	.425	.007	.094	.004
P11.2	11.0	0.18	2.4	0.09	.433	.007	.094	.004
P12	11.8	0.19	2.4	0.09	.465	.007	.094	.004
P12.5	12.3	0.19	2.4	0.09	.484	.007	.094	.004
P14	13.8	0.19	2.4	0.09	.543	.007	.094	.004
P15	14.8	0.20	2.4	0.09	.583	.008	.094	.004
P16	15.8	0.20	2.4	0.09	.622	.008	.094	.004
P18	17.8	0.21	2.4	0.09	.701	.008	.094	.004
P20	19.8	0.22	2.4	0.09	.780	.009	.094	.004
P21	20.8	0.23	2.4	0.09	.819	.009	.094	.004
P22	21.8	0.24	2.4	0.09	.858	.009	.094	.004
P22A	21.7	0.24	3.5	0.10	.854	.009	.138	.004
P22.4	22.1	0.24	3.5	0.10	.870	.009	.138	.004
P24	23.7	0.24	3.5	0.10	.933	.009	.138	.004
P25	24.7	0.25	3.5	0.10	.972	.010	.138	.004
P25.5	25.2	0.25	3.5	0.10	.992	.010	.138	.004
P26	25.7	0.26	3.5	0.10	1.012	.010	.138	.004
P28	27.7	0.28	3.5	0.10	1.091	.011	.138	.004
P29	28.7	0.29	3.5	0.10	1.130	.011	.138	.004
P29.5	29.2	0.29	3.5	0.10	1.150	.011	.138	.004
P30	29.7	0.29	3.5	0.10	1.169	.011	.138	.004
P31	30.7	0.30	3.5	0.10	1.209	.012	.138	.004
P31.5	31.2	0.31	3.5	0.10	1.228	.012	.138	.004
P32	31.7	0.31	3.5	0.10	1.248	.012	.138	.004
P34	33.7	0.33	3.5	0.10	1.327	.013	.138	.004
P35	34.7	0.34	3.5	0.10	1.366	.013	.138	.004
P35.5	35.2	0.34	3.5	0.10	1.386	.013	.138	.004
P36	35.7	0.34	3.5	0.10	1.406	.013	.138	.004
P38	37.7	0.37	3.5	0.10	1.484	.015	.138	.004
P39	38.7	0.37	3.5	0.10	1.524	.015	.138	.004
P40	39.7	0.37	3.5	0.10	1.563	.015	.138	.004
P41	40.7	0.38	3.5	0.10	1.602	.015	.138	.004
P42	41.7	0.39	3.5	0.10	1.642	.015	.138	.004
P44	43.7	0.41	3.5	0.10	1.720	.016	.138	.004
P45	44.7	0.41	3.5	0.10	1.760	.016	.138	.004
P46	45.7	0.42	3.5	0.10	1.799	.017	.138	.004
P48	47.7	0.44	3.5	0.10	1.878	.017	.138	.004
P49	48.7	0.45	3.5	0.10	1.917	.018	.138	.004
P50	49.7	0.45	3.5	0.10	1.957	.018	.138	.004
P44.5	44.5	0.41	5.7	0.13	1.752	.016	.224	.005
P48A	47.6	0.44	5.7	0.13	1.874	.017	.224	.005
P50A	49.6	0.45	5.7	0.13	1.953	.018	.224	.005
P52	51.6	0.47	5.7	0.13	2.031	.019	.224	.005
P53	52.6	0.48	5.7	0.13	2.071	.019	.224	.005
P55	54.6	0.49	5.7	0.13	2.150	.019	.224	.005
P56	55.6	0.50	5.7	0.13	2.189	.020	.224	.005
P58	57.6	0.52	5.7	0.13	2.268	.020	.224	.005
P60	59.6	0.53	5.7	0.13	2.346	.021	.224	.005
P62	61.6	0.55	5.7	0.13	2.661	.022	.224	.005
P63	62.6	0.56	5.7	0.13	2.465	.022	.224	.005
P65	64.6	0.57	5.7	0.13	2.543	.022	.224	.005
P67	66.6	0.59	5.7	0.13	2.622	.023	.224	.005
P70	69.6	0.61	5.7	0.13	2.740	.024	.224	.005
P71	70.6	0.62	5.7	0.13	2.780	.024	.224	.005
P75	74.6	0.65	5.7	0.13	2.937	.026	.224	.005
P80	79.6	0.69	5.7	0.13	3.134	.027	.224	.005
P85	84.6	0.73	5.7	0.13	3.331	.029	.224	.005
P90	89.6	0.77	5.7	0.13	3.528	.030	.224	.005
P95	94.6	0.81	5.7	0.13	3.724	.032	.224	.005
P100	99.6	0.84	5.7	0.13	3.921	.033	.224	.005
P102	101.6	0.85	5.7	0.13	4.000	.033	.224	.005
P105	104.6	0.87	5.7	0.13	4.118	.034	.224	.005
P110	109.6	0.91	5.7	0.13	4.315	.036	.224	.005
P112	111.6	0.92	5.7	0.13	4.394	.036	.224	.005
P115	114.6	0.94	5.7	0.13	4.512	.037	.224	.005
P120	119.6	0.98	5.7	0.13	4.709	.039	.224	.005
P125	124.6	1.01	5.7	0.13	4.906	.040	.224	.005
P130	129.6	1.05	5.7	0.13	5.102	.041	.224	.005
P132	131.6	1.06	5.7	0.13	5.181	.042	.224	.005
P135	134.6	1.09	5.7	0.13	5.299	.043	.224	.005
P140	139.6	1.12	5.7	0.13	5.496	.044	.224	.005
P145	144.6	1.16	5.7	0.13	5.693	.046	.224	.005
P150	149.6	1.19	5.7	0.13	5.890	.047	.224	.005
P150A	149.5	1.19	8.4	0.15	5.886	.047	.331	.006
P155	154.5	1.23	8.4	0.15	6.083	.048	.331	.006
P160	159.5	1.26	8.4	0.15	6.280	.050	.331	.006
P165	164.5	1.30	8.4	0.15	6.476	.051	.331	.006
P170	169.5	1.33	8.4	0.15	6.673	.052	.331	.006
P175	174.5	1.37	8.4	0.15	6.870	.054	.331	.006
P180	179.5	1.40	8.4	0.15	7.067	.055	.331	.006
P185	184.5	1.44	8.4	0.15	7.264	.057	.331	.006
P190	189.5	1.48	8.4	0.15	7.461	.058	.331	.006
P195	194.5	1.51	8.4	0.15	7.657	.059	.331	.006
P200	199.5	1.55	8.4	0.15	7.854	.061	.331	.006
P205	204.5	1.58	8.4	0.15	8.051	.062	.331	.006
P209	208.5	1.61	8.4	0.15	8.209	.063	.331	.006
P210	209.5	1.62	8.4	0.15	8.248	.064	.331	.006
P215	214.5	1.65	8.4	0.15	8.445	.065	.331	.006
P220	219.5	1.68	8.4	0.15	8.642	.066	.331	.006
P225	224.5	1.71	8.4	0.15	8.839	.067	.331	.006
P230	229.5	1.75	8.4	0.15	9.035	.069	.331	.006
P235	234.5	1.78	8.4	0.15	9.232	.070	.331	.006
P240	239.5	1.81	8.4	0.15	9.429	.071	.331	.006
P245	244.5	1.84	8.4	0.15	9.626	.072	.331	.006
P250	249.5	1.88	8.4	0.15	9.823	.074	.331	.006
P255	254.5	1.91	8.4	0.15	10.020	.075	.331	.006
P260	259.5	1.94	8.4	0.15	10.217	.076	.331	.006
P265	264.5	1.97	8.4	0.15	10.413	.078	.331	.006
P270	269.5	2.01	8.4	0.15	10.610	.079	.331	.006
P275	274.5	2.04	8.4	0.15	10.807	.080	.331	.006
P280	279.5	2.07	8.4	0.15	11.004	.081	.331	.006
P285	284.5	2.10	8.4	0.15	11.201	.083	.331	.006
P290	289.5	2.14	8.4	0.15	11.398	.084	.331	.006
P295	294.5	2.17	8.4	0.15	11.594	.085	.331	.006
P300	299.5	2.20	8.4	0.15	11.791	.087	.331	.006
P315	314.5	2.30	8.4	0.15	12.382	.091	.331	.006
P320	319.5	2.33	8.4	0.15	12.579	.092	.331	.006
P335	334.5	2.42	8.4	0.15	13.169	.095	.331	.006
P340	339.5	2.45	8.4	0.15	13.366	.096	.331	.006
P355	354.5	2.54	8.4	0.15	13.957	.100	.331	.006
P360	359.5	2.57	8.4	0.15	14.154	.101	.331	.006
P375	374.5	2.67	8.4	0.15	14.744	.105	.331	.006
P385	384.5	2.73	8.4	0.15	15.138	.107	.331	.006
P400	399.5	2.82	8.4	0.15	15.728	.111	.331	.006

JIS B 2401 Gland (G)

Size Reference	ID (mm)	±	CS (mm)	±	ID (inch)	±	CS (inch)	±
G25	24.4	0.25	3.1	0.10	.961	.010	.122	.004
G30	29.4	0.29	3.1	0.10	1.157	.011	.122	.004
G35	34.4	0.33	3.1	0.10	1.354	.013	.122	.004
G40	39.4	0.37	3.1	0.10	1.551	.015	.122	.004
G45	44.4	0.41	3.1	0.10	1.748	.016	.122	.004
G50	49.4	0.45	3.1	0.10	1.945	.018	.122	.004
G55	54.4	0.49	3.1	0.10	2.142	.019	.122	.004
G60	59.4	0.53	3.1	0.10	2.339	.021	.122	.004
G65	64.4	0.57	3.1	0.10	2.535	.022	.122	.004
G70	69.4	0.61	3.1	0.10	2.732	.024	.122	.004
G75	74.4	0.65	3.1	0.10	2.929	.026	.122	.004
G80	79.4	0.69	3.1	0.10	3.126	.027	.122	.004
G85	84.4	0.73	3.1	0.10	3.323	.029	.122	.004
G90	89.4	0.77	3.1	0.10	3.520	.030	.122	.004
G95	94.4	0.81	3.1	0.10	3.717	.032	.122	.004
G100	99.4	0.85	3.1	0.10	3.913	.033	.122	.004
G105	104.4	0.87	3.1	0.10	4.110	.034	.122	.004
G110	109.4	0.91	3.1	0.10	4.307	.036	.122	.004
G115	114.4	0.94	3.1	0.10	4.504	.037	.122	.004
G120	119.4	0.98	3.1	0.10	4.701	.039	.122	.004
G125	124.4	1.01	3.1	0.10	4.898	.040	.122	.004
G130	129.4	1.05	3.1	0.10	5.094	.041	.122	.004
G135	134.4	1.08	3.1	0.10	5.291	.043	.122	.004
G140	139.4	1.12	3.1	0.10	5.488	.044	.122	.004
G145	144.4	1.16	3.1	0.10	5.685	.046	.122	.004
G150	149.3	1.19	5.7	0.13	5.878	.047	.224	.005
G155	154.3	1.23	5.7	0.13	6.075	.048	.224	.005
G160	159.3	1.26	5.7	0.13	6.272	.050	.224	.005
G165	164.3	1.30	5.7	0.13	6.469	.051	.224	.005
G170	169.3	1.33	5.7	0.13	6.665	.052	.224	.005
G175	174.3	1.37	5.7	0.13	6.862	.054	.224	.005
G180	179.3	1.40	5.7	0.13	7.059	.055	.224	.005
G185	184.3	1.44	5.7	0.13	7.256	.057	.224	.005
G190	189.3	1.47	5.7	0.13	7.453	.058	.224	.005
G195	194.3	1.51	5.7	0.13	7.650	.059	.224	.005
G200	199.3	1.55	5.7	0.13	7.846	.061	.224	.005
G210	209.3	1.61	5.7	0.13	8.240	.063	.224	.005
G220	219.3	1.68	5.7	0.13	8.634	.066	.224	.005
G230	229.3	1.73	5.7	0.13	9.028	.068	.224	.005
G240	239.3	1.81	5.7	0.13	9.421	.071	.224	.005
G250	249.3	1.88	5.7	0.13	9.815	.074	.224	.005
G260	259.3	1.94	5.7	0.13	10.209	.076	.224	.005
G270	269.3	2.01	5.7	0.13	10.602	.079	.224	.005
G280	279.3	2.07	5.7	0.13	10.996	.081	.224	.005
G290	289.3	2.14	5.7	0.13	11.390	.084	.224	.005
G300	299.3	2.20	5.7	0.13	11.783	.087	.224	.005

JIS B 2401 Vacuum (V)

Dimensions for vacuum flange.

Size Reference	ID (mm)	±	CS (mm)	±	ID (inch)	±	CS (inch)	±
V15	14.5	0.20	4.0	0.10	.571	.008	.157	.004
V24	23.5	0.24	4.0	0.10	.925	.009	.157	.004
V34	33.5	0.33	4.0	0.10	1.319	.013	.157	.004
V40	39.5	0.37	4.0	0.10	1.555	.015	.157	.004
V55	54.5	0.49	4.0	0.10	2.146	.019	.157	.004
V70	69.0	0.61	4.0	0.10	2.717	.024	.157	.004
V85	84.0	0.72	4.0	0.10	3.307	.028	.157	.004
V100	99.0	0.83	4.0	0.10	3.898	.033	.157	.004
V120	119.0	0.97	4.0	0.10	4.685	.038	.157	.004
V150	148.5	1.18	4.0	0.10	5.846	.046	.157	.004
V175	173.0	1.36	4.0	0.10	6.811	.054	.157	.004
V225	222.5	1.70	6.0	0.15	8.760	.067	.236	.006
V275	272.0	2.02	6.0	0.15	10.709	.080	.236	.006
V325	321.5	2.34	6.0	0.15	12.657	.092	.236	.006
V380	376.0	2.68	6.0	0.15	14.803	.106	.236	.006
V430	425.5	2.99	6.0	0.15	16.752	.118	.236	.006
V480	475.0	3.30	6.0	0.15	18.701	.130	.236	.006
V530	524.5	3.60	10.0	0.30	20.650	.142	.394	.012
V585	579.0	3.92	10.0	0.30	22.795	.154	.394	.012
V640	633.5	4.24	10.0	0.30	24.941	.167	.394	.012
V690	683.0	4.54	10.0	0.30	26.890	.179	.394	.012
V740	732.5	4.83	10.0	0.30	28.839	.190	.394	.012
V790	782.0	5.12	10.0	0.30	30.787	.202	.394	.012
V845	836.5	5.44	10.0	0.30	32.933	.214	.394	.012
V950	940.5	6.06	10.0	0.30	37.028	.239	.394	.012
V1055	1044.0	6.67	10.0	0.30	41.102	.263	.394	.012

O’ring Sizing

Explore

O’ring Sizing

Imperial sizes

BS1806/AS568A

0.070″ (1/16″ Nominal)

0.103” (3/32″ Nominal)

0.139” (1/8″ Nominal)

0.210” (3/16″ Nominal)

0.275” (1/4″ Nominal)

SAE Straight Thread Boss Seals

BS Extended Range

BS Extended Range O’rings

Metric sizes

JIS B 2401 Piston (P)

JIS B 2401 Gland (G)

JIS B 2401 Vacuum (V)