O-Ring Size Chart

AS568 and metric o-ring size reference for rubber and FFKM seals.

Using This Size Chart

Start by identifying whether your housing follows AS568 (inch) or ISO 3601 (metric) standards. Measure the groove ID/OD and width with calibrated tools, then use the tables below to locate the corresponding dash number or metric reference.

Always verify that the cross-section squeeze and stretch remain within the recommended range for the chosen elastomer. Garlast engineers can review your hardware drawings to confirm fit, compression set performance, and long-term reliability.

Measurement Tips

Measure O-rings without stretch at 20°C (68°F) using optical comparators or mandrels.
Confirm groove tolerances and surface finish to avoid pinch or spiral failure.
Apply appropriate stretch (up to 5% for large IDs, less for small parts) and squeeze (15-30%).
Account for thermal expansion and media swell when sizing for high-temperature applications.

As568 Inch Series

Dash #	ID (in)	CS (in)	ID (mm)	CS (mm)
-001	0.029	0.040	0.74	1.02
-002	0.042	0.050	1.07	1.27
-003	0.056	0.060	1.42	1.52
-004	0.070	0.070	1.78	1.78
-005	0.101	0.070	2.57	1.78
-006	0.114	0.070	2.90	1.78
-007	0.145	0.070	3.68	1.78
-008	0.176	0.070	4.47	1.78
-009	0.208	0.070	5.28	1.78
-010	0.239	0.070	6.07	1.78
-011	0.301	0.070	7.65	1.78
-012	0.364	0.070	9.25	1.78
-013	0.426	0.070	10.82	1.78
-014	0.489	0.070	12.42	1.78
-015	0.551	0.070	14.00	1.78
-016	0.614	0.070	15.60	1.78
-017	0.676	0.070	17.17	1.78
-018	0.739	0.070	18.77	1.78
-019	0.801	0.070	20.35	1.78
-020	0.864	0.070	21.95	1.78
-021	0.926	0.070	23.52	1.78
-022	0.989	0.070	25.12	1.78
-023	1.051	0.070	26.70	1.78
-024	1.114	0.070	28.30	1.78
-025	1.176	0.070	29.87	1.78
-026	1.239	0.070	31.47	1.78
-027	1.301	0.070	33.05	1.78
-028	1.364	0.070	34.65	1.78
-029	1.489	0.070	37.82	1.78
-030	1.614	0.070	41.00	1.78
-031	1.739	0.070	44.17	1.78
-032	1.864	0.070	47.35	1.78
-033	1.989	0.070	50.52	1.78
-034	2.114	0.070	53.70	1.78
-035	2.239	0.070	56.87	1.78
-036	2.364	0.070	60.05	1.78
-037	2.489	0.070	63.22	1.78
-038	2.614	0.070	66.40	1.78
-039	2.739	0.070	69.57	1.78
-040	2.864	0.070	72.75	1.78
-041	2.989	0.070	75.92	1.78
-042	3.239	0.070	82.27	1.78
-043	3.489	0.070	88.62	1.78
-044	3.739	0.070	94.97	1.78
-045	3.989	0.070	101.32	1.78
-046	4.239	0.070	107.67	1.78
-047	4.489	0.070	114.02	1.78
-048	4.736	0.070	120.30	1.78
-049	4.989	0.070	126.72	1.78
-050	5.239	0.070	133.07	1.78
-102	0.049	0.103	1.24	2.62
-103	0.081	0.103	2.06	2.62
-104	0.112	0.103	2.84	2.62
-105	0.143	0.103	3.63	2.62
-106	0.174	0.103	4.42	2.62
-107	0.206	0.103	5.23	2.62
-108	0.237	0.103	6.02	2.62
-109	0.299	0.103	7.59	2.62
-110	0.362	0.103	9.19	2.62
-111	0.424	0.103	10.77	2.62
-112	0.487	0.103	12.37	2.62
-113	0.549	0.103	13.94	2.62
-114	0.612	0.103	15.54	2.62
-115	0.674	0.103	17.12	2.62
-116	0.737	0.103	18.72	2.62
-117	0.799	0.103	20.29	2.62
-118	0.862	0.103	21.89	2.62
-119	0.924	0.103	23.47	2.62
-120	0.987	0.103	25.07	2.62
-121	1.049	0.103	26.64	2.62
-122	1.112	0.103	28.24	2.62
-123	1.174	0.103	29.82	2.62
-124	1.237	0.103	31.42	2.62
-125	1.299	0.103	32.99	2.62
-126	1.362	0.103	34.59	2.62
-127	1.424	0.103	36.17	2.62
-128	1.487	0.103	37.77	2.62
-129	1.549	0.103	39.34	2.62
-130	1.612	0.103	40.94	2.62
-131	1.674	0.103	42.52	2.62
-132	1.737	0.103	44.12	2.62
-133	1.799	0.103	45.69	2.62
-134	1.862	0.103	47.29	2.62
-135	1.925	0.103	48.90	2.62
-136	1.987	0.103	50.47	2.62
-137	2.050	0.103	52.07	2.62
-138	2.112	0.103	53.64	2.62
-139	2.175	0.103	55.25	2.62
-140	2.237	0.103	56.82	2.62
-141	2.300	0.103	58.42	2.62
-142	2.362	0.103	59.99	2.62
-143	2.425	0.103	61.60	2.62
-144	2.487	0.103	63.17	2.62
-145	2.550	0.103	64.77	2.62
-146	2.612	0.103	66.34	2.62
-147	2.675	0.103	67.95	2.62
-148	2.737	0.103	69.52	2.62
-149	2.800	0.103	71.12	2.62
-150	2.862	0.103	72.69	2.62
-151	2.987	0.103	75.87	2.62
-152	3.237	0.103	82.22	2.62
-153	3.487	0.103	88.57	2.62
-154	3.737	0.103	94.92	2.62
-155	3.987	0.103	101.27	2.62
-156	4.237	0.103	107.62	2.62
-157	4.487	0.103	113.97	2.62
-158	4.737	0.103	120.32	2.62
-159	4.987	0.103	126.67	2.62
-160	5.237	0.103	133.02	2.62
-161	5.487	0.103	139.37	2.62
-162	5.737	0.103	145.72	2.62
-163	5.987	0.103	152.07	2.62
-164	6.237	0.103	158.42	2.62
-165	6.487	0.103	164.77	2.62
-166	6.737	0.103	171.12	2.62
-167	6.987	0.103	177.47	2.62
-168	7.237	0.103	183.82	2.62
-169	7.487	0.103	190.17	2.62
-170	7.737	0.103	196.52	2.62
-171	7.987	0.103	202.87	2.62
-172	8.237	0.103	209.22	2.62
-173	8.487	0.103	215.57	2.62
-174	8.737	0.103	221.92	2.62
-175	8.987	0.103	228.27	2.62
-176	9.237	0.103	234.62	2.62
-177	9.487	0.103	240.97	2.62
-178	9.737	0.103	247.32	2.62
-201	0.171	0.139	4.34	3.53
-202	0.234	0.139	5.94	3.53
-203	0.296	0.139	7.52	3.53
-204	0.359	0.139	9.12	3.53
-205	0.421	0.139	10.69	3.53
-206	0.484	0.139	12.29	3.53
-207	0.546	0.139	13.87	3.53
-208	0.609	0.139	15.47	3.53
-209	0.671	0.139	17.04	3.53
-210	0.734	0.139	18.64	3.53
-211	0.796	0.139	20.22	3.53
-212	0.859	0.139	21.82	3.53
-213	0.921	0.139	23.39	3.53
-214	0.984	0.139	24.99	3.53
-215	1.046	0.139	26.57	3.53
-216	1.109	0.139	28.17	3.53
-217	1.171	0.139	29.74	3.53
-218	1.234	0.139	31.34	3.53
-219	1.296	0.139	32.92	3.53
-220	1.359	0.139	34.52	3.53
-221	1.421	0.139	36.09	3.53
-222	1.484	0.139	37.69	3.53
-223	1.609	0.139	40.87	3.53
-224	1.734	0.139	44.04	3.53
-225	1.859	0.139	47.22	3.53
-226	1.984	0.139	50.39	3.53
-227	2.109	0.139	53.57	3.53
-228	2.234	0.139	56.74	3.53
-229	2.359	0.139	59.92	3.53
-230	2.484	0.139	63.09	3.53
-231	2.609	0.139	66.27	3.53
-232	2.734	0.139	69.44	3.53
-233	2.859	0.139	72.62	3.53
-234	2.984	0.139	75.79	3.53
-235	3.109	0.139	78.97	3.53
-236	3.234	0.139	82.14	3.53
-237	3.359	0.139	85.32	3.53
-238	3.484	0.139	88.49	3.53
-239	3.609	0.139	91.67	3.53
-240	3.734	0.139	94.84	3.53
-241	3.859	0.139	98.02	3.53
-242	3.984	0.139	101.19	3.53
-243	4.109	0.139	104.37	3.53
-244	4.234	0.139	107.54	3.53
-245	4.359	0.139	110.72	3.53
-246	4.484	0.139	113.89	3.53
-247	4.609	0.139	117.07	3.53
-248	4.734	0.139	120.24	3.53
-249	4.859	0.139	123.42	3.53
-250	4.984	0.139	126.59	3.53
-251	5.109	0.139	129.77	3.53
-252	5.234	0.139	132.94	3.53
-253	5.359	0.139	136.12	3.53
-254	5.484	0.139	139.29	3.53
-255	5.609	0.139	142.47	3.53
-256	5.734	0.139	145.64	3.53
-257	5.859	0.139	148.82	3.53
-258	5.984	0.139	151.99	3.53
-259	6.234	0.139	158.34	3.53
-260	6.484	0.139	164.69	3.53
-261	6.734	0.139	171.04	3.53
-262	6.984	0.139	177.39	3.53
-263	7.234	0.139	183.74	3.53
-264	7.484	0.139	190.09	3.53
-265	7.734	0.139	196.44	3.53
-266	7.984	0.139	202.79	3.53
-267	8.234	0.139	209.14	3.53
-268	8.484	0.139	215.49	3.53
-269	8.734	0.139	221.84	3.53
-270	8.984	0.139	228.19	3.53
-271	9.234	0.139	234.54	3.53
-272	9.484	0.139	240.89	3.53
-273	9.734	0.139	247.24	3.53
-274	9.984	0.139	253.59	3.53
-275	10.484	0.139	266.29	3.53
-276	10.984	0.139	278.99	3.53
-277	11.484	0.139	291.69	3.53
-278	11.984	0.139	304.39	3.53
-279	12.984	0.139	329.79	3.53
-280	13.984	0.139	355.19	3.53
-281	14.984	0.139	380.59	3.53
-282	15.955	0.139	405.26	3.53
-283	16.955	0.139	430.66	3.53
-284	17.955	0.139	456.06	3.53
-309	0.412	0.210	10.46	5.33
-310	0.475	0.210	12.07	5.33
-311	0.537	0.210	13.64	5.33
-312	0.600	0.210	15.24	5.33
-313	0.662	0.210	16.81	5.33
-314	0.725	0.210	18.42	5.33
-315	0.787	0.210	19.99	5.33
-316	0.850	0.210	21.59	5.33
-317	0.912	0.210	23.16	5.33
-318	0.975	0.210	24.77	5.33
-319	1.037	0.210	26.34	5.33
-320	1.100	0.210	27.94	5.33
-321	1.162	0.210	29.51	5.33
-322	1.225	0.210	31.12	5.33
-323	1.287	0.210	32.69	5.33
-324	1.350	0.210	34.29	5.33
-325	1.475	0.210	37.47	5.33
-326	1.600	0.210	40.64	5.33
-327	1.725	0.210	43.82	5.33
-328	1.850	0.210	46.99	5.33
-329	1.975	0.210	50.17	5.33
-330	2.100	0.210	53.34	5.33
-331	2.225	0.210	56.52	5.33
-332	2.350	0.210	59.69	5.33
-333	2.475	0.210	62.87	5.33
-334	2.600	0.210	66.04	5.33
-335	2.725	0.210	69.22	5.33
-336	2.850	0.210	72.39	5.33
-337	2.975	0.210	75.57	5.33
-338	3.100	0.210	78.74	5.33
-339	3.225	0.210	81.92	5.33
-340	3.350	0.210	85.09	5.33
-341	3.475	0.210	88.27	5.33
-342	3.600	0.210	91.44	5.33
-343	3.725	0.210	94.62	5.33
-344	3.850	0.210	97.79	5.33
-345	3.975	0.210	100.97	5.33
-346	4.100	0.210	104.14	5.33
-347	4.225	0.210	107.32	5.33
-348	4.350	0.210	110.49	5.33
-349	4.475	0.210	113.67	5.33
-350	4.600	0.210	116.84	5.33
-351	4.725	0.210	120.02	5.33
-352	4.850	0.210	123.19	5.33
-353	4.975	0.210	126.37	5.33
-354	5.100	0.210	129.54	5.33
-355	5.225	0.210	132.72	5.33
-356	5.350	0.210	135.89	5.33
-357	5.475	0.210	139.07	5.33
-358	5.600	0.210	142.24	5.33
-359	5.725	0.210	145.42	5.33
-360	5.850	0.210	148.59	5.33
-361	5.975	0.210	151.77	5.33
-362	6.225	0.210	158.12	5.33
-363	6.475	0.210	164.47	5.33
-364	6.725	0.210	170.82	5.33
-365	6.975	0.210	177.17	5.33
-366	7.225	0.210	183.52	5.33
-367	7.475	0.210	189.87	5.33
-368	7.725	0.210	196.22	5.33
-369	7.975	0.210	202.57	5.33
-370	8.225	0.210	208.92	5.33
-371	8.475	0.210	215.27	5.33
-372	8.725	0.210	221.62	5.33
-373	8.975	0.210	227.97	5.33
-374	9.225	0.210	234.32	5.33
-375	9.475	0.210	240.67	5.33
-376	9.725	0.210	247.02	5.33
-377	9.975	0.210	253.37	5.33
-378	10.475	0.210	266.07	5.33
-379	10.975	0.210	278.77	5.33
-380	11.475	0.210	291.47	5.33
-381	11.975	0.210	304.17	5.33
-382	12.975	0.210	329.57	5.33
-383	13.975	0.210	354.97	5.33
-384	14.975	0.210	380.37	5.33
-385	15.955	0.210	405.26	5.33
-386	16.955	0.210	430.66	5.33
-387	17.955	0.210	456.06	5.33
-388	18.955	0.210	481.46	5.33
-389	19.955	0.210	506.86	5.33
-390	20.955	0.210	532.26	5.33
-391	21.955	0.210	557.66	5.33
-392	22.940	0.210	582.68	5.33
-393	23.940	0.210	608.08	5.33
-394	24.940	0.210	633.48	5.33
-395	25.940	0.210	658.88	5.33
-425	4.475	0.275	113.67	6.99
-426	4.600	0.275	116.84	6.99
-427	4.725	0.275	120.02	6.99
-428	4.850	0.275	123.19	6.99
-429	4.975	0.275	126.37	6.99
-430	5.100	0.275	129.54	6.99
-431	5.225	0.275	132.72	6.99
-432	5.350	0.275	135.89	6.99
-433	5.475	0.275	139.07	6.99
-434	5.600	0.275	142.24	6.99
-435	5.725	0.275	145.42	6.99
-436	5.850	0.275	148.59	6.99
-437	5.975	0.275	151.77	6.99
-438	6.225	0.275	158.12	6.99
-439	6.475	0.275	164.47	6.99
-440	6.725	0.275	170.82	6.99
-441	6.975	0.275	177.17	6.99
-442	7.225	0.275	183.52	6.99
-443	7.475	0.275	189.87	6.99
-444	7.725	0.275	196.22	6.99
-445	7.975	0.275	202.57	6.99
-446	8.475	0.275	215.27	6.99
-447	8.975	0.275	227.97	6.99
-448	9.475	0.275	240.67	6.99
-449	9.975	0.275	253.37	6.99
-450	10.475	0.275	266.07	6.99
-451	10.975	0.275	278.77	6.99
-452	11.475	0.275	291.47	6.99
-453	11.975	0.275	304.17	6.99
-454	12.475	0.275	316.87	6.99
-455	12.975	0.275	329.57	6.99
-456	13.475	0.275	342.27	6.99
-457	13.975	0.275	354.97	6.99
-458	14.475	0.275	367.67	6.99
-459	14.975	0.275	380.37	6.99
-460	15.475	0.275	393.07	6.99
-461	15.955	0.275	405.26	6.99
-462	16.455	0.275	417.96	6.99
-463	16.955	0.275	430.66	6.99
-464	17.455	0.275	443.36	6.99
-465	17.955	0.275	456.06	6.99
-466	18.455	0.275	468.76	6.99
-467	18.955	0.275	481.46	6.99
-468	19.455	0.275	494.16	6.99
-469	19.955	0.275	506.86	6.99
-470	20.955	0.275	532.26	6.99
-471	21.955	0.275	557.66	6.99
-472	22.940	0.275	582.68	6.99
-473	23.940	0.275	608.08	6.99
-474	24.940	0.275	633.48	6.99
-475	25.940	0.275	658.88	6.99

ISO 3601 Metric Series

Reference	ID (mm)	CS (mm)
A0018	1.8	1.8
A0020	2	1.8
A0022	2.24	1.8
A0025	2.5	1.8
A0028	2.8	1.8
A0032	3.15	1.8
A0036	3.55	1.8
A0038	3.75	1.8
A0040	4	1.8
A0045	4.5	1.8
A0049	4.87	1.8
A0050	5	1.8
A0052	5.15	1.8
A0053	5.3	1.8
A0056	5.6	1.8
A0060	6	1.8
A0063	6.3	1.8
A0067	6.7	1.8
A0069	6.9	1.8
A0071	7.1	1.8
A0075	7.5	1.8
A0080	8	1.8
A0085	8.5	1.8
A0088	8.75	1.8
A0090	9	1.8
A0095	9.5	1.8
A0100	10	1.8
A0106	10.6	1.8
A0112	11.2	1.8
A0118	11.8	1.8
A0125	12.5	1.8
A0132	13.2	1.8
A0140	14	1.8
A0150	15	1.8
A0160	16	1.8
A0170	17	1.8
A0180	18	1.8
A0190	19	1.8
A0200	20	1.8
A0212	21.2	1.8
A0224	22.4	1.8
A0236	23.6	1.8
A0250	25	1.8
A0258	25.8	1.8
A0265	26.5	1.8
A0280	28	1.8
A0300	30	1.8
A0315	31.5	1.8
A0325	32.5	1.8
A0335	33.5	1.8
A0345	34.5	1.8
A0355	35.5	1.8
A0365	36.5	1.8
A0375	37.5	1.8
A0387	38.7	1.8
A0400	40	1.8
A0412	41.2	1.8
A0425	42.5	1.8
A0437	43.7	1.8
A0450	45	1.8
A0475	47.5	1.8
A0500	50	1.8
A0530	53	1.8
A0560	56	1.8
A0600	60	1.8
A0630	63	1.8
A0670	67	1.8
A0710	71	1.8
A0750	75	1.8
A0800	80	1.8
A0850	85	1.8
A0900	90	1.8
A0950	95	1.8
A1000	100	1.8
A1060	106	1.8
A1120	112	1.8
A1180	118	1.8
A1250	125	1.8
B0045	4.5	2.65
B0053	5.3	2.65
B0060	6	2.65
B0069	6.9	2.65
B0080	8	2.65
B0090	9	2.65
B0095	9.5	2.65
B0100	10	2.65
B0106	10.6	2.65
B0112	11.2	2.65
B0118	11.8	2.65
B0125	12.5	2.65
B0132	13.2	2.65
B0140	14	2.65
B0150	15	2.65
B0160	16	2.65
B0170	17	2.65
B0180	18	2.65
B0190	19	2.65
B0200	20	2.65
B0212	21.2	2.65
B0224	22.4	2.65
B0236	23.6	2.65
B0250	25	2.65
B0258	25.8	2.65
B0265	26.5	2.65
B0280	28	2.65
B0300	30	2.65
B0315	31.5	2.65
B0325	32.5	2.65
B0335	33.5	2.65
B0345	34.5	2.65
B0355	35.5	2.65
B0365	36.5	2.65
B0375	37.5	2.65
B0387	38.7	2.65
B0400	40	2.65
B0412	41.2	2.65
B0425	42.5	2.65
B0437	43.7	2.65
B0450	45	2.65
B0462	46.2	2.65
B0475	47.5	2.65
B0487	48.7	2.65
B0500	50	2.65
B0515	51.5	2.65
B0530	53	2.65
B0545	54.5	2.65
B0560	56	2.65
B0580	58	2.65
B0600	60	2.65
B0615	61.5	2.65
B0630	63	2.65
B0650	65	2.65
B0670	67	2.65
B0690	69	2.65
B0710	71	2.65
B0730	73	2.65
B0750	75	2.65
B0800	80	2.65
B0850	85	2.65
B0900	90	2.65
B0950	95	2.65
B1000	100	2.65
B1060	106	2.65
B1120	112	2.65
B1180	118	2.65
B1250	125	2.65
B1320	132	2.65
B1400	140	2.65
B1500	150	2.65
B1600	160	2.65
B1700	170	2.65
B1800	180	2.65
B1900	190	2.65
B2000	200	2.65
B2120	212	2.65
B2240	224	2.65
B2300	230	2.65
B2360	236	2.65
B2430	243	2.65
B2500	250	2.65
C0140	14	3.55
C0150	15	3.55
C0160	16	3.55
C0170	17	3.55
C0180	18	3.55
C0190	19	3.55
C0400	40	3.55
C0412	41.2	3.55
C0425	42.5	3.55
C0437	43.7	3.55
C0450	45	3.55
C0462	46.2	3.55
C0475	47.5	3.55
C0487	48.7	3.55
C0600	60	3.55
C0615	61.5	3.55
C0630	63	3.55
C0650	65	3.55
C0670	67	3.55
C0690	69	3.55
C0710	71	3.55
C0730	73	3.55
C0750	75	3.55
C0775	77.5	3.55
C0800	80	3.55
C0825	82.5	3.55
C0850	85	3.55
C0875	87.5	3.55
C0900	90	3.55
C0925	92.5	3.55
C0950	95	3.55
C0975	97.5	3.55
C1000	100	3.55
C1030	103	3.55
C1060	106	3.55
C1090	109	3.55
C1120	112	3.55
C1150	115	3.55
C1180	118	3.55
C1220	122	3.55
C1250	125	3.55
C1280	128	3.55
C1320	132	3.55
C1360	136	3.55
C1400	140	3.55
C1450	145	3.55
C1500	150	3.55
C1550	155	3.55
C1600	160	3.55
C1650	165	3.55
C1700	170	3.55
C1750	175	3.55
C1800	180	3.55
C1850	185	3.55
C1900	190	3.55
C1950	195	3.55
C2000	200	3.55
C2120	212	3.55
C2180	218	3.55
C2240	224	3.55
C2300	230	3.55
C2360	236	3.55
C2500	250	3.55
C2580	258	3.55
C2650	265	3.55
C2800	280	3.55
C2900	290	3.55
C3000	300	3.55
C3070	307	3.55
C3150	315	3.55
C3350	335	3.55
C3550	355	3.55
CO200	20	3.55
CO212	21.2	3.55
CO224	22.4	3.55
CO236	23.6	3.55
CO250	25	3.55
CO258	25.8	3.55
CO265	26.5	3.55
CO280	28	3.55
CO300	30	3.55
CO315	31.5	3.55
CO325	32.5	3.55
CO335	33.5	3.55
CO345	34.5	3.55
CO355	35.5	3.55
CO365	36.5	3.55
CO375	37.5	3.55
CO387	38.7	3.55
CO500	50	3.55
CO515	51.5	3.55
CO530	53	3.55
CO545	54.5	3.55
CO560	56	3.55
CO580	58	3.55
D0375	37.5	5.3
D0387	38.7	5.3
D0400	40	5.3
D0412	41.2	5.3
D0425	42.5	5.3
D0437	43.7	5.3
D0450	45	5.3
D0462	46.2	5.3
D0475	47.5	5.3
D0487	48.7	5.3
D0500	50	5.3
D0515	51.5	5.3
D0530	53	5.3
D0545	54.5	5.3
D0560	56	5.3
D0580	58	5.3
D0600	60	5.3
D0615	61.5	5.3
D0630	63	5.3
D0650	65	5.3
D0670	67	5.3
D0690	69	5.3
D0710	71	5.3
D0730	73	5.3
D0750	75	5.3
D0775	77.5	5.3
D0800	80	5.3
D0825	82.5	5.3
D0850	85	5.3
D0875	87.5	5.3
D0900	90	5.3
D0925	92.5	5.3
D0950	95	5.3
D0975	97.5	5.3
D1000	100	5.3
D1030	103	5.3
D1060	106	5.3
D1090	109	5.3
D1120	112	5.3
D1150	115	5.3
D1180	118	5.3
D1220	122	5.3
D1250	125	5.3
D1280	128	5.3
D1320	132	5.3
D1360	136	5.3
D1400	140	5.3
D1450	145	5.3
D1500	150	5.3
D1550	155	5.3
D1600	160	5.3
D1650	165	5.3
D1700	170	5.3
D1750	175	5.3
D1800	180	5.3
D1850	185	5.3
D1900	190	5.3
D1950	195	5.3
D2000	200	5.3
E1090	109	7
E1120	112	7
E1150	115	7
E1180	118	7
E1220	122	7
E1250	125	7
E1280	128	7
E1320	132	7
E1360	136	7
E1400	140	7
E1450	145	7
E1500	150	7
E1550	155	7
E1600	160	7
E1650	165	7
E1700	170	7
E1750	175	7
E1800	180	7
E1850	185	7
E1900	190	7
E1950	195	7
E2000	200	7
E2060	206	7
E2120	212	7
E2180	218	7
E2240	224	7
E2300	230	7
E2360	236	7
E2430	243	7
E2500	250	7
E2580	258	7
E2650	265	7
E2720	272	7
E2800	280	7
E2900	290	7
E3000	300	7
E3070	307	7
E3150	315	7
E3250	325	7
E3350	335	7
E3450	345	7
E3550	355	7
E3650	365	7
E3750	375	7
E3870	387	7
E4000	400	7

Installation & Fit Guidelines

Static Face Seals

Target 15–25% squeeze on the cross-section. Ensure groove depth accounts for thermal expansion and media swell to avoid over-compression.

Radial (Piston/rod) Seals

Limit stretch to 2% for piston applications and keep inside diameter stretch under 5% for rod seals to preserve sealing force without overstressing the O-ring.

Dynamic Applications

Use low-friction coatings or lubricants, and verify groove edge radii to minimize abrasion. Consider back-up rings for high differential pressure.

Quality Assurance

Inspect incoming O-rings for surface defects, flat spots, and lot traceability. Store in sealed bags away from UV, ozone, and extreme temperatures.