Imperial O-Ring Sizing Chart

Varigate's O-Ring Part Numbers are Simple!

Material/Duro + O-Ring Size (Dash#)
Example: MN7 10O02

Available O-Ring Materials

N70 - Imperial NBR 70 Durometer
N90 - Imperial NBR 90 Durometer
FK7 - Imperial FKM 75 Durometer
FK9 - Imperial FKM 90 Durometer
V75 - Imperial Viton 75 Durometer
V90 - Imperial Viton 90 Durometer
V95 - Imperial Viton 95 Durometer
H70 - Imperial HNBR 70 Durometer
H80 - Imperial HNBR 80 Durometer
H90 - Imperial HNBR 90 Durometer

Dash Number	Nominal - I.D.	Nominal - C/S	Imperial Actual I.D.	Tolerance	Imperial Actual C/S	Tolerance
001	1/32	1/32	0.029	± 0.004	0.04	± 0.003
002	3/64	3/64	0.042	± 0.004	0.05	± 0.003
003	1/16	1/16	0.056	± 0.004	0.06	± 0.003
004	5/64	1/16	0.07	± 0.005	0.07	± 0.003
005	3/32	1/16	0.101	± 0.005	0.07	± 0.003
006	1/8	1/16	0.114	± 0.005	0.07	± 0.003
007	5/32	1/16	0.145	± 0.005	0.07	± 0.003
008	3/16	1/16	0.176	± 0.005	0.07	± 0.003
009	7/32	1/16	0.208	± 0.005	0.07	± 0.003
010	1/4	1/16	0.239	± 0.005	0.07	± 0.003
011	5/16	1/16	0.301	± 0.005	0.07	± 0.003
012	3/8	1/16	0.364	± 0.005	0.07	± 0.003
013	7/16	1/16	0.426	± 0.005	0.07	± 0.003
014	1/2	1/16	0.489	± 0.005	0.07	± 0.003
015	9/16	1/16	0.551	± 0.007	0.07	± 0.003
016	5/8	1/16	0.614	± 0.009	0.07	± 0.003
017	11/16	1/16	0.676	± 0.009	0.07	± 0.003
018	3/4	1/16	0.739	± 0.009	0.07	± 0.003
019	13/16	1/16	0.801	± 0.009	0.07	± 0.003
020	7/8	1/16	0.864	± 0.009	0.07	± 0.003
021	15/16	1/16	0.926	± 0.009	0.07	± 0.003
022	1	1/16	0.989	± 0.010	0.07	± 0.003
023	1 - 1/16	1/16	1.051	± 0.010	0.07	± 0.003
024	1 - 1/8	1/16	1.114	± 0.010	0.07	± 0.003
025	1 - 3/16	1/16	1.176	± 0.011	0.07	± 0.003
026	1 - 1/4	1/16	1.239	± 0.011	0.07	± 0.003
027	1 - 5/16	1/16	1.301	± 0.011	0.07	± 0.003
028	1 - 3/8	1/16	1.364	± 0.013	0.07	± 0.003
029	1 - 1/2	1/16	1.489	± 0.013	0.07	± 0.003
030	1 - 5/8	1/16	1.614	± 0.013	0.07	± 0.003
031	1 - 3/4	1/16	1.739	± 0.015	0.07	± 0.003
032	1 - 7/8	1/16	1.864	± 0.015	0.07	± 0.003
033	2	1/16	1.989	± 0.018	0.07	± 0.003
034	2 - 1/8	1/16	2.114	± 0.018	0.07	± 0.003
035	2 - 1/4	1/16	2.239	± 0.018	0.07	± 0.003
036	2 - 3/8	1/16	2.364	± 0.018	0.07	± 0.003
037	2 - 1/2	1/16	2.489	± 0.018	0.07	± 0.003
038	2 - 5/8	1/16	2.614	± 0.020	0.07	± 0.003
039	2 - 3/4	1/16	2.739	± 0.020	0.07	± 0.003
040	2 - 7/8	1/16	2.864	± 0.020	0.07	± 0.003
041	3	1/16	2.989	± 0.024	0.07	± 0.003
042	3 - 1/4	1/16	3.239	± 0.024	0.07	± 0.003
043	3 - 1/2	1/16	3.489	± 0.024	0.07	± 0.003
044	3 - 3/4	1/16	3.739	± 0.027	0.07	± 0.003
045	4	1/16	3.989	± 0.027	0.07	± 0.003
046	4 - 1/4	1/16	4.239	± 0.030	0.07	± 0.003
047	4 - 1/2	1/16	4.489	± 0.030	0.07	± 0.003
048	4 - 3/4	1/16	4.739	± 0.030	0.07	± 0.003
049	5	1/16	4.989	± 0.037	0.07	± 0.003
050	5 - 1/4	1/16	5.239	± 0.037	0.07	± 0.003
0102	1/16	3/32	0.049	± 0.005	0.103	± 0.003
0103	3/32	3/32	0.081	± 0.005	0.103	± 0.003
0104	1/8	3/32	0.112	± 0.005	0.103	± 0.003
0105	5/32	3/32	0.143	± 0.005	0.103	± 0.003
0106	3/16	3/32	0.174	± 0.005	0.103	± 0.003
107	7/32	3/32	0.206	± 0.005	0.103	± 0.003
108	1/4	3/32	0.237	± 0.005	0.103	± 0.003
109	5/16	3/32	0.299	± 0.005	0.103	± 0.003
110	3/8	3/32	0.362	± 0.005	0.103	± 0.003
111	7/16	3/32	0.424	± 0.005	0.103	± 0.003
112	1/2	3/32	0.487	± 0.005	0.103	± 0.003
113	9/16	3/32	0.549	± 0.007	0.103	± 0.003
114	5/8	3/32	0.612	± 0.009	0.103	± 0.003
115	11/16	3/32	0.674	± 0.009	0.103	± 0.003
116	3/4	3/32	0.737	± 0.009	0.103	± 0.003
117	13/16	3/32	0.799	± 0.010	0.103	± 0.003
118	7/8	3/32	0.862	± 0.010	0.103	± 0.003
119	15/16	3/32	0.924	± 0.010	0.103	± 0.003
120	1	3/32	0.987	± 0.010	0.103	± 0.003
121	1 - 1/16	3/32	1.049	± 0.010	0.103	± 0.003
122	1 - 1/8	3/32	1.112	± 0.010	0.103	± 0.003
123	1 - 3/16	3/32	1.174	± 0.012	0.103	± 0.003
124	1 - 1/4	3/32	1.237	± 0.012	0.103	± 0.003
125	1 - 5/16	3/32	1.299	± 0.012	0.103	± 0.003
126	1 - 3/8	3/32	1.362	± 0.012	0.103	± 0.003
127	1 - 7/16	3/32	1.424	± 0.012	0.103	± 0.003
128	1 - 1/2	3/32	1.487	± 0.012	0.103	± 0.003
129	1 - 9/16	3/32	1.549	± 0.015	0.103	± 0.003
130	1 - 5/8	3/32	1.612	± 0.015	0.103	± 0.003
131	1 - 11/16	3/32	1.674	± 0.015	0.103	± 0.003
132	1 - 3/4	3/32	1.737	± 0.015	0.103	± 0.003
133	1 - 13/16	3/32	1.799	± 0.015	0.103	± 0.003
134	1 - 7/8	3/32	1.862	± 0.015	0.103	± 0.003
135	1 - 15/16	3/32	1.925	± 0.017	0.103	± 0.003
136	2	3/32	1.987	± 0.017	0.103	± 0.003
137	2 - 1/16	3/32	2.05	± 0.017	0.103	± 0.003
138	2 - 1/8	3/32	2.112	± 0.017	0.103	± 0.003
139	2 - 3/16	3/32	2.175	± 0.017	0.103	± 0.003
140	2 - 1/4	3/32	2.237	± 0.017	0.103	± 0.003
141	2 - 5/16	3/32	2.3	± 0.020	0.103	± 0.003
142	2 - 3/8	3/32	2.362	± 0.020	0.103	± 0.003
143	2 - 7/16	3/32	2.425	± 0.020	0.103	± 0.003
144	2 - 1/2	3/32	2.487	± 0.020	0.103	± 0.003
145	2 - 9/16	3/32	2.55	± 0.020	0.103	± 0.003
146	2 - 5/8	3/32	2.612	± 0.020	0.103	± 0.003
147	2 - 11/16	3/32	2.675	± 0.022	0.103	± 0.003
148	2 - 3/4	3/32	2.737	± 0.022	0.103	± 0.003
149	2 - 13/16	3/32	2.8	± 0.022	0.103	± 0.003
150	2 - 7/8	3/32	2.862	± 0.022	0.103	± 0.003
151	3	3/32	2.987	± 0.024	0.103	± 0.003
152	3 - 1/4	3/32	3.237	± 0.024	0.103	± 0.003
153	3 - 1/2	3/32	3.487	± 0.024	0.103	± 0.003
154	3 - 3/4	3/32	3.737	± 0.028	0.103	± 0.003
155	4	3/32	3.987	± 0.028	0.103	± 0.003
156	4 - 1/4	3/32	4.237	± 0.030	0.103	± 0.003
157	4 - 1/2	3/32	4.487	± 0.030	0.103	± 0.003
158	4 - 3/4	3/32	4.737	± 0.030	0.103	± 0.003
159	5	3/32	4.987	± 0.035	0.103	± 0.003
160	5 - 1/4	3/32	5.237	± 0.035	0.103	± 0.003
161	5 - 1/2	3/32	5.487	± 0.035	0.103	± 0.003
162	5 - 3/4	3/32	5.737	± 0.035	0.103	± 0.003
163	6	3/32	5.987	± 0.035	0.103	± 0.003
164	6 - 1/4	3/32	6.237	± 0.040	0.103	± 0.003
165	6 - 1/2	3/32	6.487	± 0.040	0.103	± 0.003
166	6 - 3/4	3/32	6.737	± 0.040	0.103	± 0.003
167	7	3/32	6.987	± 0.040	0.103	± 0.003
168	7 - 1/4	3/32	7.237	± 0.045	0.103	± 0.003
169	7 - 1/2	3/32	7.487	± 0.045	0.103	± 0.003
170	7 - 3/4	3/32	7.737	± 0.045	0.103	± 0.003
171	8	3/32	7.987	± 0.045	0.103	± 0.003
172	8 - 1/4	3/32	8.237	± 0.050	0.103	± 0.003
173	8 - 1/2	3/32	8.487	± 0.050	0.103	± 0.003
174	8 - 3/4	3/32	8.737	± 0.050	0.103	± 0.003
175	9	3/32	8.987	± 0.050	0.103	± 0.003
176	9 - 1/4	3/32	9.237	± 0.055	0.103	± 0.003
177	9 - 1/2	3/32	9.487	± 0.055	0.103	± 0.003
178	9 - 3/4	3/32	9.737	± 0.055	0.103	± 0.003
201	3/16	1/8	0.171	± 0.005	0.139	± 0.004
202	1/4	1/8	0.234	± 0.005	0.139	± 0.004
203	5/16	1/8	0.296	± 0.005	0.139	± 0.004
204	3/8	1/8	0.359	± 0.005	0.139	± 0.004
205	7/16	1/8	0.421	± 0.005	0.139	± 0.004
206	1/2	1/8	0.484	± 0.005	0.139	± 0.004
207	9/16	1/8	0.546	± 0.007	0.139	± 0.004
208	5/8	1/8	0.609	± 0.009	0.139	± 0.004
209	11/16	1/8	0.671	± 0.009	0.139	± 0.004
210	3/4	1/8	0.734	± 0.010	0.139	± 0.004
211	13/16	1/8	0.796	± 0.010	0.139	± 0.004
212	7/8	1/8	0.859	± 0.010	0.139	± 0.004
213	15/16	1/8	0.921	± 0.010	0.139	± 0.004
214	1	1/8	0.984	± 0.010	0.139	± 0.004
215	1 - 1/16	1/8	1.046	± 0.010	0.139	± 0.004
216	1 - 1/8	1/8	1.109	± 0.012	0.139	± 0.004
217	1 - 3/16	1/8	1.171	± 0.012	0.139	± 0.004
218	1 - 1/4	1/8	1.234	± 0.012	0.139	± 0.004
219	1 - 5/16	1/8	1.296	± 0.012	0.139	± 0.004
220	1 - 3/8	1/8	1.359	± 0.012	0.139	± 0.004
221	1 - 7/16	1/8	1.421	± 0.012	0.139	± 0.004
222	1 - 1/2	1/8	1.484	± 0.015	0.139	± 0.004
223	1 - 5/8	1/8	1.609	± 0.015	0.139	± 0.004
224	1 - 3/4	1/8	1.734	± 0.015	0.139	± 0.004
225	1 - 7/8	1/8	1.859	± 0.018	0.139	± 0.004
226	2	1/8	1.984	± 0.018	0.139	± 0.004
227	2 - 1/8	1/8	2.109	± 0.018	0.139	± 0.004
228	2 - 1/4	1/8	2.234	± 0.020	0.139	± 0.004
229	2 - 3/8	1/8	2.359	± 0.020	0.139	± 0.004
230	2 - 1/2	1/8	2.484	± 0.020	0.139	± 0.004
231	2 - 5/8	1/8	2.609	± 0.020	0.139	± 0.004
232	2 - 3/4	1/8	2.734	± 0.024	0.139	± 0.004
233	2 - 7/8	1/8	2.859	± 0.024	0.139	± 0.004
234	3	1/8	2.984	± 0.024	0.139	± 0.004
235	3 - 1/8	1/8	3.109	± 0.024	0.139	± 0.004
236	3 - 1/4	1/8	3.234	± 0.024	0.139	± 0.004
237	3 - 3/8	1/8	3.359	± 0.024	0.139	± 0.004
238	3 - 1/2	1/8	3.484	± 0.024	0.139	± 0.004
239	3 - 5/8	1/8	3.609	± 0.028	0.139	± 0.004
240	3 - 3/4	1/8	3.734	± 0.028	0.139	± 0.004
241	3 - 7/8	1/8	3.859	± 0.028	0.139	± 0.004
242	4	1/8	3.984	± 0.028	0.139	± 0.004
243	4 - 1/8	1/8	4.109	± 0.028	0.139	± 0.004
244	4 - 1/4	1/8	4.234	± 0.030	0.139	± 0.004
245	4 - 3/8	1/8	4.359	± 0.030	0.139	± 0.004
246	4 - 1/2	1/8	4.484	± 0.030	0.139	± 0.004
247	4 - 5/8	1/8	4.609	± 0.030	0.139	± 0.004
248	4 - 3/4	1/8	4.734	± 0.030	0.139	± 0.004
249	4 - 7/8	1/8	4.859	± 0.035	0.139	± 0.004
250	5	1/8	4.984	± 0.035	0.139	± 0.004
251	5 - 1/8	1/8	5.109	± 0.035	0.139	± 0.004
252	5 - 1/4	1/8	5.234	± 0.035	0.139	± 0.004
253	5 - 3/8	1/8	5.359	± 0.035	0.139	± 0.004
254	5 - 1/2	1/8	5.484	± 0.035	0.139	± 0.004
255	5 - 5/8	1/8	5.609	± 0.035	0.139	± 0.004
256	5 - 3/4	1/8	5.734	± 0.035	0.139	± 0.004
257	5 - 7/8	1/8	5.859	± 0.035	0.139	± 0.004
258	6	1/8	5.984	± 0.035	0.139	± 0.004
259	6 - 1/4	1/8	6.234	± 0.040	0.139	± 0.004
260	6 - 1/2	1/8	6.484	± 0.040	0.139	± 0.004
261	6 - 3/4	1/8	6.734	± 0.040	0.139	± 0.004
262	7	1/8	6.984	± 0.040	0.139	± 0.004
263	7 - 1/4	1/8	7.234	± 0.045	0.139	± 0.004
264	7 - 1/2	1/8	7.484	± 0.045	0.139	± 0.004
265	7 - 3/4	1/8	7.734	± 0.045	0.139	± 0.004
266	8	1/8	7.984	± 0.045	0.139	± 0.004
267	8 - 1/4	1/8	8.234	± 0.050	0.139	± 0.004
268	8 - 1/2	1/8	8.484	± 0.050	0.139	± 0.004
269	8 - 3/4	1/8	8.734	± 0.050	0.139	± 0.004
270	9	1/8	8.984	± 0.050	0.139	± 0.004
271	9 - 1/4	1/8	9.234	± 0.055	0.139	± 0.004
272	9 - 1/2	1/8	9.484	± 0.055	0.139	± 0.004
273	9 - 3/4	1/8	9.734	± 0.055	0.139	± 0.004
274	10	1/8	9.984	± 0.055	0.139	± 0.004
275	10 - 1/2	1/8	10.484	± 0.055	0.139	± 0.004
276	11	1/8	10.984	± 0.065	0.139	± 0.004
277	11 - 1/2	1/8	11.484	± 0.065	0.139	± 0.004
278	12	1/8	11.984	± 0.065	0.139	± 0.004
279	13	1/8	12.984	± 0.065	0.139	± 0.004
280	14	1/8	13.984	± 0.065	0.139	± 0.004
281	15	1/8	14.984	± 0.065	0.139	± 0.004
282	16	1/8	15.955	± 0.075	0.139	± 0.004
283	17	1/8	16.956	± 0.080	0.139	± 0.004
284	18	1/8	17.955	± 0.085	0.139	± 0.004
309	7/16	3/16	0.412	± 0.005	0.21	± 0.005
310	1/2	3/16	0.475	± 0.005	0.21	± 0.005
311	9/16	3/16	0.537	± 0.007	0.21	± 0.005
312	5/8	3/16	0.6	± 0.009	0.21	± 0.005
313	11/16	3/16	0.662	± 0.009	0.21	± 0.005
314	3/4	3/16	0.725	± 0.010	0.21	± 0.005
315	13/16	3/16	0.787	± 0.010	0.21	± 0.005
316	7/8	3/16	0.85	± 0.010	0.21	± 0.005
317	15/16	3/16	0.912	± 0.010	0.21	± 0.005
318	1	3/16	0.975	± 0.010	0.21	± 0.005
319	1 - 1/16	3/16	1.037	± 0.010	0.21	± 0.005
320	1 - 1/8	3/16	1.1	± 0.012	0.21	± 0.005
321	1 - 3/16	3/16	1.162	± 0.012	0.21	± 0.005
322	1 - 1/4	3/16	1.225	± 0.012	0.21	± 0.005
323	1 - 5/16	3/16	1.287	± 0.012	0.21	± 0.005
324	1 - 3/8	3/16	1.35	± 0.012	0.21	± 0.005
325	1 - 1/2	3/16	1.475	± 0.015	0.21	± 0.005
326	1 - 5/8	3/16	1.6	± 0.015	0.21	± 0.005
327	1 - 3/4	3/16	1.725	± 0.015	0.21	± 0.005
328	1 - 7/8	3/16	1.85	± 0.015	0.21	± 0.005
329	2	3/16	1.975	± 0.018	0.21	± 0.005
330	2 - 1/8	3/16	2.1	± 0.018	0.21	± 0.005
331	2 - 1/4	3/16	2.225	± 0.018	0.21	± 0.005
332	2 - 3/8	3/16	2.35	± 0.018	0.21	± 0.005
333	2 - 1/2	3/16	2.475	± 0.020	0.21	± 0.005
334	2 - 5/8	3/16	2.6	± 0.020	0.21	± 0.005
335	2 - 3/4	3/16	2.725	± 0.020	0.21	± 0.005
336	2 - 7/8	3/16	2.85	± 0.020	0.21	± 0.005
337	3	3/16	2.975	± 0.024	0.21	± 0.005
338	3 - 1/8	3/16	3.1	± 0.024	0.21	± 0.005
339	3 - 1/4	3/16	3.225	± 0.024	0.21	± 0.005
340	3 - 3/8	3/16	3.35	± 0.024	0.21	± 0.005
341	3 - 1/2	3/16	3.475	± 0.024	0.21	± 0.005
342	3 - 5/8	3/16	3.6	± 0.028	0.21	± 0.005
343	3 - 3/4	3/16	3.725	± 0.028	0.21	± 0.005
344	3 - 7/8	3/16	3.85	± 0.028	0.21	± 0.005
345	4	3/16	3.975	± 0.028	0.21	± 0.005
346	4 - 1/8	3/16	4.1	± 0.028	0.21	± 0.005
347	4 - 1/4	3/16	4.225	± 0.030	0.21	± 0.005
348	4 - 3/8	3/16	4.35	± 0.030	0.21	± 0.005
349	4 - 1/2	3/16	4.475	± 0.030	0.21	± 0.005
350	4 - 5/8	3/16	4.6	± 0.030	0.21	± 0.005
351	4 - 3/4	3/16	4.725	± 0.030	0.21	± 0.005
352	4 - 7/8	3/16	4.85	± 0.030	0.21	± 0.005
353	5	3/16	4.975	± 0.037	0.21	± 0.005
354	5 - 1/8	3/16	5.1	± 0.037	0.21	± 0.005
355	5 - 1/4	3/16	5.225	± 0.037	0.21	± 0.005
356	5 - 3/8	3/16	5.35	± 0.037	0.21	± 0.005
357	5 - 1/2	3/16	5.475	± 0.037	0.21	± 0.005
358	5 - 5/8	3/16	5.6	± 0.037	0.21	± 0.005
359	5 - 3/4	3/16	5.725	± 0.037	0.21	± 0.005
360	5 - 7/8	3/16	5.85	± 0.037	0.21	± 0.005
361	6	3/16	5.975	± 0.037	0.21	± 0.005
362	6 - 1/4	3/16	6.225	± 0.040	0.21	± 0.005
363	6 - 1/2	3/16	6.475	± 0.040	0.21	± 0.005
364	6 - 3/4	3/16	6.725	± 0.040	0.21	± 0.005
365	7	3/16	6.975	± 0.040	0.21	± 0.005
366	7 - 1/4	3/16	7.225	± 0.045	0.21	± 0.005
367	7 - 1/2	3/16	7.475	± 0.045	0.21	± 0.005
368	7 - 3/4	3/16	7.725	± 0.045	0.21	± 0.005
369	8	3/16	7.975	± 0.045	0.21	± 0.005
370	8 - 1/4	3/16	8.225	± 0.050	0.21	± 0.005
371	8 - 1/2	3/16	8.475	± 0.050	0.21	± 0.005
372	8 - 3/4	3/16	8.725	± 0.050	0.21	± 0.005
373	9	3/16	8.975	± 0.050	0.21	± 0.005
374	9 - 1/4	3/16	9.225	± 0.055	0.21	± 0.005
375	9 - 1/2	3/16	9.475	± 0.055	0.21	± 0.005
376	9 - 3/4	3/16	9.725	± 0.055	0.21	± 0.005
377	10	3/16	9.975	± 0.055	0.21	± 0.005
378	10 - 1/2	3/16	10.475	± 0.060	0.21	± 0.005
379	11	3/16	10.975	± 0.060	0.21	± 0.005
380	11 - 1/2	3/16	11.475	± 0.065	0.21	± 0.005
381	12	3/16	11.975	± 0.065	0.21	± 0.005
382	13	3/16	12.975	± 0.065	0.21	± 0.005
383	14	3/16	13.975	± 0.070	0.21	± 0.005
384	15	3/16	14.975	± 0.070	0.21	± 0.005
385	16	3/16	15.955	± 0.075	0.21	± 0.005
386	17	3/16	16.955	± 0.080	0.21	± 0.005
387	18	3/16	17.955	± 0.085	0.21	± 0.005
388	19	3/16	18.952	± 0.090	0.21	± 0.005
389	20	3/16	19.952	± 0.095	0.21	± 0.005
390	21	3/16	20.952	± 0.095	0.21	± 0.005
391	22	3/16	21.952	± 0.100	0.21	± 0.005
392	23	3/16	22.94	± 0.105	0.21	± 0.005
393	24	3/16	23.94	± 0.110	0.21	± 0.005
394	25	3/16	24.94	± 0.115	0.21	± 0.005
395	26	3/16	25.94	± 0.120	0.21	± 0.005
425	4 - 1/2	1/4	4.475	± 0.033	0.275	± 0.006
426	4 - 5/8	1/4	4.6	± 0.033	0.275	± 0.006
427	4 - 3/4	1/4	4.725	± 0.033	0.275	± 0.006
428	4 - 7/8	1/4	4.85	± 0.033	0.275	± 0.006
429	5	1/4	4.975	± 0.037	0.275	± 0.006
430	5 - 1/8	1/4	5.1	± 0.037	0.275	± 0.006
431	5 - 1/4	1/4	5.225	± 0.037	0.275	± 0.006
432	5 - 3/8	1/4	5.35	± 0.037	0.275	± 0.006
433	5 - 1/2	1/4	5.475	± 0.037	0.275	± 0.006
434	5 - 5/8	1/4	5.6	± 0.037	0.275	± 0.006
435	5 - 3/4	1/4	5.725	± 0.037	0.275	± 0.006
436	5 - 7/8	1/4	5.85	± 0.037	0.275	± 0.006
437	6	1/4	5.975	± 0.037	0.275	± 0.006
438	6 - 1/4	1/4	6.225	± 0.040	0.275	± 0.006
439	6 - 1/2	1/4	6.475	± 0.040	0.275	± 0.006
440	6 - 3/4	1/4	6.725	± 0.040	0.275	± 0.006
441	7	1/4	6.975	± 0.040	0.275	± 0.006
442	7 - 1/4	1/4	7.225	± 0.045	0.275	± 0.006
443	7 - 1/2	1/4	7.475	± 0.045	0.275	± 0.006
444	7 - 3/4	1/4	7.725	± 0.045	0.275	± 0.006
445	8	1/4	7.975	± 0.045	0.275	± 0.006
446	8 - 1/2	1/4	8.475	± 0.055	0.275	± 0.006
447	9	1/4	8.975	± 0.055	0.275	± 0.006
448	9 - 1/2	1/4	9.475	± 0.055	0.275	± 0.006
449	10	1/4	9.975	± 0.055	0.275	± 0.006
450	10 - 1/2	1/4	10.475	± 0.060	0.275	± 0.006
451	11	1/4	10.975	± 0.060	0.275	± 0.006
452	11 - 1/2	1/4	11.475	± 0.060	0.275	± 0.006
453	12	1/4	11.975	± 0.060	0.275	± 0.006
454	12 - 1/2	1/4	12.475	± 0.060	0.275	± 0.006
455	13	1/4	12.975	± 0.060	0.275	± 0.006
456	13 - 1/2	1/4	13.475	± 0.070	0.275	± 0.006
457	14	1/4	13.975	± 0.070	0.275	± 0.006
458	14 - 1/2	1/4	14.475	± 0.070	0.275	± 0.006
459	15	1/4	14.975	± 0.070	0.275	± 0.006
460	15 - 1/2	1/4	15.475	± 0.070	0.275	± 0.006
461	16	1/4	15.955	± 0.075	0.275	± 0.006
462	16 - 1/2	1/4	16.455	± 0.075	0.275	± 0.006
463	17	1/4	16.955	± 0.080	0.275	± 0.006
464	17 - 1/2	1/4	17.455	± 0.085	0.275	± 0.006
465	18	1/4	17.955	± 0.085	0.275	± 0.006
466	18 - 1/2	1/4	18.455	± 0.085	0.275	± 0.006
467	19	1/4	18.955	± 0.090	0.275	± 0.006
468	19 - 1/2	1/4	19.455	± 0.090	0.275	± 0.006
469	20	1/4	19.955	± 0.095	0.275	± 0.006
470	21	1/4	20.955	± 0.095	0.275	± 0.006
471	22	1/4	21.955	± 0.100	0.275	± 0.006
472	23	1/4	22.94	± 0.105	0.275	± 0.006
473	24	1/4	23.94	± 0.110	0.275	± 0.006
474	25	1/4	24.94	± 0.115	0.275	± 0.006
475	26	1/4	25.94	± 0.120	0.275	± 0.006

900 Series O-Ring (ORB)

Dash Number	Imperial Actual - I.D.	Tolerance	Imperial Actual - C/S	Tolerance
901	0.185	± 0.005	0.056	± 0.003
902	0.239	± 0.005	0.064	± 0.003
903	0.301	± 0.005	0.064	± 0.003
904	0.351	± 0.005	0.072	± 0.003
905	0.414	± 0.005	0.072	± 0.003
906	0.468	± 0.005	0.078	± 0.003
907	0.53	± 0.005	0.082	± 0.003
908	0.644	± 0.009	0.087	± 0.003
909	0.706	± 0.009	0.097	± 0.003
910	0.755	± 0.009	0.097	± 0.003
911	0.863	± 0.009	0.116	± 0.004
912	0.924	± 0.009	0.116	± 0.004
913	0.986	± 0.010	0.116	± 0.004
914	1.048	± 0.010	0.116	± 0.004
916	1.171	± 0.010	0.116	± 0.004
918	1.355	± 0.012	0.116	± 0.004
920	1.475	± 0.014	0.118	± 0.004
924	1.72	± 0.014	0.118	± 0.004
928	2.09	± 0.018	0.118	± 0.004
932	2.337	± 0.018	0.118	± 0.004

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900 Series O-Ring (ORB)

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