O-Ring Size Chart for Standard O-Ring Dimensions

We offer a wide selection of O-rings in various styles and materials to meet the diverse needs of your applications. Among our offerings, AS568 O-rings are one of the most commonly used standards in the industry, adhering to the SAE (Society of Automotive Engineers) specifications. To help you find the correct size, refer to the AS568 O-ring size chart below.

When measuring an O-ring, it’s important to determine the inside diameter (ID) and cross-sectional diameter (CS) of your existing O-ring or the gland where the O-ring will be placed. Once you’ve identified the appropriate AS568 dash size, you can select the right compound from our Chemical Compatibility table, ensuring optimal performance in your specific environment.

If you need assistance in measuring or selecting the correct O-ring size, or material, or have any other questions, our team of experienced application engineers is ready to help. Contact us for personalized support or explore our O-Ring Considerations blog post for more detailed information on choosing the best O-ring for your needs.

Request Technical Assistance

Download our O-Ring Selection & Application Guide

AS568 Standard O-Ring Size Chart

#AS568	I.D. (IN)	I.D. ± (IN)	C/S (IN)	C/S ± (IN)	O.D. (IN)	I.D. (MM)	I.D. ± (MM)	C/S (MM)	C/S ± (MM)	O.D. (MM)
#AS568	I.D. (IN)	I.D. ± (IN)	C/S (IN)	C/S ± (IN)	O.D. (IN)	I.D. (MM)	I.D. ± (MM)	C/S (MM)	C/S ± (MM)	O.D. (MM)
-001	0.029	0.004	0.040	0.003	0.109	0.740	0.110	1.020	0.070	2.780
-002	0.042	0.004	0.050	0.003	0.142	1.070	0.110	1.270	0.070	3.610
-003	0.056	0.004	0.060	0.003	0.176	1.420	0.110	1.530	0.070	4.480
-004	0.070	0.005	0.070	0.003	0.210	1.780	0.120	1.780	0.080	5.340
-005	0.101	0.005	0.070	0.003	0.241	2.570	0.120	1.780	0.080	6.130
-006	0.114	0.005	0.070	0.003	0.254	2.900	0.120	1.780	0.080	6.460
-007	0.145	0.005	0.070	0.003	0.285	3.690	0.120	1.780	0.080	7.250
-008	0.176	0.005	0.070	0.003	0.316	4.470	0.120	1.780	0.080	8.030
-009	0.208	0.005	0.070	0.003	0.348	5.290	0.120	1.780	0.080	8.850
-010	0.239	0.005	0.070	0.003	0.379	6.070	0.120	1.780	0.080	9.630
-011	0.301	0.005	0.070	0.003	0.441	7.650	0.120	1.780	0.080	11.210
-012	0.364	0.005	0.070	0.003	0.504	9.250	0.120	1.780	0.080	12.810
-013	0.426	0.005	0.070	0.003	0.566	10.820	0.120	1.780	0.080	14.380
-014	0.489	0.005	0.070	0.003	0.629	12.420	0.120	1.780	0.080	15.980
-015	0.551	0.005	0.070	0.003	0.691	14.000	0.120	1.780	0.080	17.560
-016	0.614	0.005	0.070	0.003	0.754	15.600	0.120	1.780	0.080	19.160
-017	0.676	0.005	0.070	0.003	0.816	17.170	0.120	1.780	0.080	20.730
-018	0.739	0.005	0.070	0.003	0.879	18.770	0.120	1.780	0.080	22.330
-019	0.801	0.006	0.070	0.003	0.941	20.350	0.150	1.780	0.080	23.910
-020	0.864	0.006	0.070	0.003	1.004	21.950	0.150	1.780	0.080	25.510
-021	0.926	0.006	0.070	0.003	1.066	23.520	0.150	1.780	0.080	27.080
-022	0.989	0.006	0.070	0.003	1.129	25.120	0.150	1.780	0.080	28.680
-023	1.051	0.006	0.070	0.003	1.191	26.700	0.150	1.780	0.080	30.260
-024	1.114	0.006	0.070	0.003	1.254	28.300	0.150	1.780	0.080	31.860
-025	1.176	0.006	0.070	0.003	1.316	29.870	0.150	1.780	0.080	33.430
-026	1.239	0.006	0.070	0.003	1.379	31.470	0.150	1.780	0.080	35.030
-027	1.301	0.006	0.070	0.003	1.441	33.050	0.150	1.780	0.080	36.610
-028	1.364	0.006	0.070	0.003	1.504	34.650	0.150	1.780	0.080	38.210
-029	1.489	0.010	0.070	0.003	1.629	37.820	0.250	1.780	0.080	41.380
-030	1.614	0.010	0.070	0.003	1.754	41.000	0.250	1.780	0.080	44.560
-031	1.739	0.010	0.070	0.003	1.879	44.170	0.250	1.780	0.080	47.730
-032	1.864	0.010	0.070	0.003	1.904	47.350	0.250	1.780	0.080	50.910
-033	1.989	0.010	0.070	0.003	2.138	50.520	0.250	1.780	0.080	54.080
-034	2.114	0.010	0.070	0.003	2.254	53.700	0.250	1.780	0.080	57.260
-035	2.239	0.010	0.070	0.003	2.379	56.870	0.250	1.780	0.080	60.430
-036	2.364	0.010	0.070	0.003	2.504	60.040	0.250	1.780	0.080	63.600
-037	2.489	0.010	0.070	0.003	2.629	63.220	0.250	1.780	0.080	66.780
-038	2.614	0.010	0.070	0.003	2.754	66.400	0.250	1.780	0.080	69.960
-039	2.739	0.015	0.070	0.003	2.879	69.570	0.380	1.780	0.080	73.130
-040	2.864	0.015	0.070	0.003	3.004	72.750	0.380	1.780	0.080	76.310
-041	2.989	0.015	0.070	0.003	3.129	75.920	0.380	1.780	0.080	79.480
-042	3.239	0.015	0.070	0.003	3.379	82.270	0.380	1.780	0.080	85.830
-043	3.489	0.015	0.070	0.003	3.629	88.620	0.380	1.780	0.080	92.180
-044	3.739	0.015	0.070	0.003	3.879	94.970	0.380	1.780	0.080	98.530
-045	3.989	0.015	0.070	0.003	4.129	101.320	0.380	1.780	0.080	104.880
-046	4.239	0.015	0.070	0.003	4.379	107.670	0.380	1.780	0.080	111.230
-047	4.489	0.015	0.070	0.003	4.629	114.020	0.380	1.780	0.080	117.580
-048	4.739	0.015	0.070	0.003	4.879	120.370	0.380	1.780	0.080	123.930
-049	4.989	0.023	0.070	0.003	5.129	126.720	0.580	1.780	0.080	130.280
-050	5.239	0.023	0.070	0.003	5.379	133.070	0.580	1.780	0.080	136.630
-102	0.049	0.005	0.103	0.003	0.255	1.240	0.120	2.620	0.080	6.480
-103	0.081	0.005	0.103	0.003	0.287	2.050	0.120	2.620	0.080	7.290
-104	0.112	0.005	0.103	0.003	0.318	2.840	0.120	2.620	0.080	8.080
-105	0.143	0.005	0.103	0.003	0.349	3.630	0.120	2.620	0.080	8.870
-106	0.174	0.005	0.103	0.003	0.380	4.420	0.120	2.620	0.080	9.660
-107	0.206	0.005	0.103	0.003	0.412	5.230	0.120	2.620	0.080	10.470
-108	0.237	0.005	0.103	0.003	0.443	6.020	0.120	2.620	0.080	11.260
-109	0.299	0.005	0.103	0.003	0.505	7.600	0.120	2.620	0.080	12.840
-110	0.362	0.005	0.103	0.003	0.568	9.190	0.120	2.620	0.080	14.430
-111	0.424	0.005	0.103	0.003	0.630	10.770	0.120	2.620	0.080	16.010
-112	0.487	0.005	0.103	0.003	0.693	12.370	0.120	2.620	0.080	17.610
-113	0.549	0.005	0.103	0.003	0.755	13.950	0.120	2.620	0.080	19.190
-114	0.612	0.005	0.103	0.003	0.818	15.540	0.120	2.620	0.080	20.780
-115	0.674	0.005	0.103	0.003	0.880	17.120	0.120	2.620	0.080	22.360
-116	0.737	0.005	0.103	0.003	0.943	18.720	0.120	2.620	0.080	23.960
-117	0.799	0.006	0.103	0.003	1.005	20.290	0.150	2.620	0.080	25.530
-118	0.862	0.006	0.103	0.003	1.068	21.900	0.150	2.620	0.080	27.140
-119	0.924	0.006	0.103	0.003	1.130	23.470	0.150	2.620	0.080	28.710
-120	0.987	0.006	0.103	0.003	1.193	25.070	0.150	2.620	0.080	30.310
-121	1.049	0.006	0.103	0.003	1.255	26.650	0.150	2.620	0.080	31.890
-122	1.112	0.006	0.103	0.003	1.318	28.250	0.150	2.620	0.080	33.490
-123	1.174	0.006	0.103	0.003	1.380	29.820	0.150	2.620	0.080	35.060
-124	1.237	0.006	0.103	0.003	1.443	31.420	0.150	2.620	0.080	36.660
-125	1.299	0.006	0.103	0.003	1.505	33.000	0.150	2.620	0.080	38.240
-126	1.362	0.006	0.103	0.003	1.568	34.600	0.150	2.620	0.080	39.840
-127	1.424	0.006	0.103	0.003	1.630	36.170	0.150	2.620	0.080	41.410
-128	1.487	0.006	0.103	0.003	1.693	37.770	0.150	2.620	0.080	43.010
-129	1.549	0.010	0.103	0.003	1.755	39.350	0.250	2.620	0.080	44.590
-130	1.612	0.010	0.103	0.003	1.818	40.950	0.250	2.620	0.080	46.190
-131	1.674	0.010	0.103	0.003	1.880	42.520	0.250	2.620	0.080	47.760
-132	1.737	0.010	0.103	0.003	1.943	44.120	0.250	2.620	0.080	49.360
-133	1.799	0.010	0.103	0.003	2.005	45.700	0.250	2.620	0.080	50.940
-134	1.862	0.010	0.103	0.003	2.068	17.300	0.250	2.620	0.080	22.540
-135	1.925	0.010	0.103	0.003	2.131	48.900	0.250	2.620	0.080	54.140
-136	1.987	0.010	0.103	0.003	2.193	50.470	0.250	2.620	0.080	55.710
-137	2.050	0.010	0.103	0.003	2.256	52.070	0.250	2.620	0.080	57.310
-138	2.112	0.010	0.103	0.003	2.318	53.650	0.250	2.620	0.080	58.890
-139	2.175	0.010	0.103	0.003	2.381	55.250	0.250	2.620	0.080	60.490
-140	2.237	0.010	0.103	0.003	2.443	56.820	0.250	2.620	0.080	62.060
-141	2.300	0.010	0.103	0.003	2.506	58.420	0.250	2.620	0.080	63.660
-142	2.362	0.010	0.103	0.003	2.568	60.000	0.250	2.620	0.080	65.240
-143	2.425	0.010	0.103	0.003	2.631	61.600	0.250	2.620	0.080	66.840
-144	2.487	0.010	0.103	0.003	2.693	63.170	0.250	2.620	0.080	68.410
-145	2.550	0.010	0.103	0.003	2.756	64.770	0.250	2.620	0.080	70.010
-146	2.612	0.010	0.103	0.003	2.818	66.350	0.250	2.620	0.080	71.590
-147	2.675	0.015	0.103	0.003	2.881	67.950	0.380	2.620	0.080	73.190
-148	2.737	0.015	0.103	0.003	2.943	69.520	0.380	2.620	0.080	74.760
-149	2.800	0.015	0.103	0.003	3.006	71.120	0.380	2.620	0.080	76.360
-150	2.862	0.015	0.103	0.003	3.068	72.700	0.380	2.620	0.080	77.940
-151	2.987	0.015	0.103	0.003	3.193	75.870	0.380	2.620	0.080	81.110
-152	3.237	0.015	0.103	0.003	3.443	82.220	0.380	2.620	0.080	87.460
-153	3.487	0.015	0.103	0.003	3.693	88.570	0.380	2.620	0.080	93.810
-154	3.737	0.015	0.103	0.003	3.943	94.920	0.380	2.620	0.080	100.160
-155	3.987	0.015	0.103	0.003	4.193	101.270	0.380	2.620	0.080	106.510
-156	4.237	0.015	0.103	0.003	4.443	107.620	0.380	2.620	0.080	112.860
-157	4.487	0.015	0.103	0.003	4.693	113.970	0.380	2.620	0.080	119.210
-158	4.737	0.015	0.103	0.003	4.943	120.320	0.380	2.620	0.080	125.560
-159	4.987	0.015	0.103	0.003	5.193	126.670	0.380	2.620	0.080	131.910
-160	5.237	0.023	0.103	0.003	5.443	133.020	0.580	2.620	0.080	138.260
-161	5.487	0.023	0.103	0.003	5.693	139.370	0.580	2.620	0.080	144.610
-162	5.737	0.023	0.103	0.003	5.943	145.720	0.580	2.620	0.080	150.960
-163	5.987	0.023	0.103	0.003	6.193	152.070	0.580	2.620	0.080	157.310
-164	6.237	0.023	0.103	0.003	6.443	158.420	0.580	2.620	0.080	163.660
-165	6.487	0.023	0.103	0.003	6.693	164.770	0.580	2.620	0.080	170.010
-166	6.737	0.023	0.103	0.003	6.943	171.120	0.580	2.620	0.080	176.360
-167	6.987	0.023	0.103	0.003	7.193	177.470	0.580	2.620	0.080	182.710
-168	7.237	0.030	0.103	0.003	7.443	183.820	0.760	2.620	0.080	189.060
-169	7.487	0.030	0.103	0.003	7.693	190.170	0.760	2.620	0.080	195.410
-170	7.737	0.030	0.103	0.003	7.943	196.520	0.760	2.620	0.080	201.760
-171	7.987	0.030	0.103	0.003	8.193	202.870	0.760	2.620	0.080	208.110
-172	8.237	0.030	0.103	0.003	8.443	209.220	0.760	2.620	0.080	214.460
-173	8.487	0.030	0.103	0.003	8.693	215.570	0.760	2.620	0.080	220.810
-174	8.737	0.030	0.103	0.003	8.943	221.920	0.760	2.620	0.080	227.160
-175	8.987	0.030	0.103	0.003	9.193	228.270	0.760	2.620	0.080	233.510
-176	9.237	0.030	0.103	0.003	9.443	234.620	0.760	2.620	0.080	239.860
-177	9.487	0.030	0.103	0.003	9.693	240.970	0.760	2.620	0.080	246.210
-178	9.737	0.030	0.103	0.003	9.943	247.320	0.760	2.620	0.080	252.560
-201	0.171	0.005	0.139	0.004	0.449	4.340	0.120	3.530	0.100	11.400
-202	0.234	0.005	0.139	0.004	0.512	5.940	0.120	3.530	0.100	13.000
-203	0.296	0.005	0.139	0.004	0.574	7.520	0.120	3.530	0.100	14.580
-204	0.359	0.005	0.139	0.004	0.637	9.120	0.120	3.530	0.100	16.180
-205	0.421	0.005	0.139	0.004	0.699	10.690	0.120	3.530	0.100	17.750
-206	0.484	0.005	0.139	0.004	0.762	12.290	0.120	3.530	0.100	19.350
-207	0.546	0.005	0.139	0.004	0.824	13.870	0.120	3.530	0.100	20.930
-208	0.609	0.005	0.139	0.004	0.887	15.470	0.120	3.530	0.100	22.530
-209	0.671	0.005	0.139	0.004	0.949	17.040	0.120	3.530	0.100	24.100
-210	0.734	0.006	0.139	0.004	1.012	18.640	0.150	3.530	0.100	25.700
-211	0.796	0.006	0.139	0.004	1.074	20.220	0.150	3.530	0.100	27.280
-212	0.859	0.006	0.139	0.004	1.137	21.820	0.150	3.530	0.100	28.880
-213	0.921	0.006	0.139	0.004	1.199	23.390	0.150	3.530	0.100	30.450
-214	0.984	0.006	0.139	0.004	1.262	25.000	0.150	3.530	0.100	32.060
-215	1.046	0.006	0.139	0.004	1.324	26.570	0.150	3.530	0.100	33.630
-216	1.109	0.006	0.139	0.004	1.387	28.170	0.150	3.530	0.100	35.230
-217	1.171	0.006	0.139	0.004	1.449	29.750	0.150	3.530	0.100	36.810
-218	1.234	0.006	0.139	0.004	1.512	31.340	0.150	3.530	0.100	38.400
-219	1.296	0.006	0.139	0.004	1.574	32.920	0.150	3.530	0.100	39.980
-220	1.359	0.006	0.139	0.004	1.637	34.520	0.150	3.530	0.100	41.580
-221	1.421	0.006	0.139	0.004	1.699	36.100	0.150	3.530	0.100	43.160
-222	1.484	0.006	0.139	0.004	1.762	37.700	0.150	3.530	0.100	44.760
-223	1.609	0.010	0.139	0.004	1.887	40.870	0.250	3.530	0.100	47.930
-224	1.734	0.010	0.139	0.004	2.012	44.050	0.250	3.530	0.100	51.110
-225	1.859	0.010	0.139	0.004	2.137	47.220	0.250	3.530	0.100	54.280
-226	1.984	0.010	0.139	0.004	2.262	50.400	0.250	3.530	0.100	57.460
-227	2.109	0.010	0.139	0.004	2.387	53.570	0.250	3.530	0.100	60.630
-228	2.234	0.010	0.139	0.004	2.512	56.750	0.250	3.530	0.100	63.810
-229	2.359	0.010	0.139	0.004	2.637	59.920	0.250	3.530	0.100	66.980
-230	2.484	0.010	0.139	0.004	2.762	63.100	0.250	3.530	0.100	70.160
-231	2.609	0.100	0.139	0.004	2.887	66.270	0.250	3.530	0.100	73.330
-232	2.734	0.015	0.139	0.004	3.012	69.440	0.380	3.530	0.100	76.500
-233	2.859	0.015	0.139	0.004	3.137	72.620	0.380	3.530	0.100	79.680
-234	2.984	0.015	0.139	0.004	3.262	75.790	0.380	3.530	0.100	82.850
-235	3.109	0.015	0.139	0.004	3.387	78.970	0.380	3.530	0.100	86.030
-236	3.234	0.015	0.139	0.004	3.512	82.140	0.380	3.530	0.100	89.200
-237	3.359	0.015	0.139	0.004	2.637	85.320	0.380	3.530	0.100	92.380
-238	3.484	0.015	0.139	0.004	3.762	88.490	0.380	3.530	0.100	95.550
-239	3.609	0.015	0.139	0.004	3.887	91.670	0.380	3.530	0.100	98.730
-240	3.734	0.015	0.139	0.004	4.012	94.840	0.380	3.530	0.100	101.900
-241	3.859	0.015	0.139	0.004	4.137	98.020	0.380	3.530	0.100	105.080
-242	3.984	0.015	0.139	0.004	4.262	101.190	0.380	3.530	0.100	108.250
-243	4.109	0.015	0.139	0.004	4.387	104.370	0.380	3.530	0.100	111.430
-244	4.234	0.015	0.139	0.004	4.512	107.540	0.380	3.530	0.100	114.600
-245	4.359	0.015	0.139	0.004	4.637	110.720	0.380	3.530	0.100	117.780
-246	4.484	0.015	0.139	0.004	4.762	113.890	0.380	3.530	0.100	120.950
-247	4.609	0.015	0.139	0.004	4.887	117.070	0.380	3.530	0.100	124.130
-248	4.734	0.015	0.139	0.004	5.012	120.240	0.380	3.530	0.100	127.300
-249	4.859	0.015	0.139	0.004	5.137	123.420	0.380	3.530	0.100	130.480
-250	4.984	0.015	0.139	0.004	5.262	126.590	0.380	3.530	0.100	133.650
-251	5.109	0.023	0.139	0.004	5.387	129.770	0.580	3.530	0.100	136.830
-252	5.234	0.023	0.139	0.004	5.512	132.940	0.580	3.530	0.100	140.000
-253	5.359	0.023	0.139	0.004	5.637	136.120	0.580	3.530	0.100	143.180
-254	5.484	0.023	0.139	0.004	5.762	139.300	0.580	3.530	0.100	146.360
-255	5.609	0.023	0.139	0.004	5.887	142.470	0.580	3.530	0.100	149.530
-256	5.734	0.023	0.139	0.004	6.012	145.650	0.580	3.530	0.100	152.710
-257	5.859	0.023	0.139	0.004	6.137	148.820	0.580	3.530	0.100	155.880
-258	5.984	0.023	0.139	0.004	6.262	152.000	0.580	3.530	0.100	159.060
-259	6.234	0.023	0.139	0.004	6.512	158.350	0.580	3.530	0.100	165.410
-260	6.484	0.023	0.139	0.004	6.762	164.700	0.580	3.530	0.100	171.760
-261	6.734	0.023	0.139	0.004	7.012	171.050	0.580	3.530	0.100	178.110
-262	6.984	0.023	0.139	0.004	7.262	177.400	0.580	3.530	0.100	184.460
-263	7.234	0.030	0.139	0.004	7.512	183.750	0.760	3.530	0.100	190.810
-264	7.484	0.030	0.139	0.004	7.762	190.100	0.760	3.530	0.100	197.160
-265	7.734	0.030	0.139	0.004	8.012	196.450	0.760	3.530	0.100	203.510
-266	7.984	0.030	0.139	0.004	8.262	202.800	0.760	3.530	0.100	209.860
-267	8.234	0.030	0.139	0.004	8.512	209.150	0.760	3.530	0.100	216.210
-268	8.484	0.030	0.139	0.004	8.762	215.500	0.760	3.530	0.100	222.560
-269	8.734	0.030	0.139	0.004	9.012	221.850	0.760	3.530	0.100	228.910
-270	8.984	0.030	0.139	0.004	9.262	228.200	0.760	3.530	0.100	235.260
-271	9.234	0.030	0.139	0.004	9.512	234.550	0.760	3.530	0.100	241.610
-272	9.484	0.030	0.139	0.004	9.762	240.900	0.760	3.530	0.100	247.960
-273	9.734	0.030	0.139	0.004	10.012	247.250	0.760	3.530	0.100	254.310
-274	9.984	0.030	0.139	0.004	10.262	253.600	0.760	3.530	0.100	260.660
-275	10.484	0.030	0.139	0.004	10.762	266.300	0.760	3.530	0.100	273.360
-276	10.984	0.030	0.139	0.004	11.262	279.000	0.760	3.530	0.100	286.060
-277	11.484	0.030	0.139	0.004	11.762	291.700	0.760	3.530	0.100	298.760
-278	11.984	0.030	0.139	0.004	12.262	304.400	0.760	3.530	0.100	311.460
-279	12.984	0.030	0.139	0.004	13.262	329.800	0.760	3.530	0.100	336.860
-280	13.984	0.030	0.139	0.004	14.262	355.200	0.760	3.530	0.100	362.260
-281	14.984	0.030	0.139	0.004	15.262	380.600	0.760	3.530	0.100	387.660
-282	15.955	0.045	0.139	0.004	16.233	405.260	1.140	3.530	0.100	412.320
-283	16.955	0.045	0.139	0.004	17.233	430.660	1.140	3.530	0.100	437.720
-284	17.955	0.045	0.139	0.004	18.233	456.060	1.140	3.530	0.100	463.120
-309	0.412	0.005	0.210	0.005	0.832	10.460	0.120	5.340	0.120	21.140
-310	0.475	0.005	0.210	0.005	0.895	12.070	0.120	5.340	0.120	22.750
-311	0.537	0.005	0.210	0.005	0.957	13.640	0.120	5.340	0.120	24.320
-312	0.600	0.005	0.210	0.005	1.020	15.240	0.120	5.340	0.120	25.920
-313	0.662	0.005	0.210	0.005	1.082	16.810	0.120	5.340	0.120	27.490
-314	0.725	0.006	0.210	0.005	1.145	18.420	0.150	5.340	0.120	29.100
-315	0.787	0.006	0.210	0.005	1.207	19.990	0.150	5.340	0.120	30.670
-316	0.850	0.006	0.210	0.005	1.270	21.590	0.150	5.340	0.120	32.270
-317	0.912	0.006	0.210	0.005	1.332	23.160	0.150	5.340	0.120	33.840
-318	0.975	0.006	0.210	0.005	1.395	24.770	0.150	5.340	0.120	35.450
-319	1.037	0.006	0.210	0.005	1.457	26.340	0.150	5.340	0.120	37.020
-320	1.100	0.006	0.210	0.005	1.520	27.940	0.150	5.340	0.120	38.620
-321	1.162	0.006	0.210	0.005	1.582	29.510	0.150	5.340	0.120	40.190
-322	1.225	0.006	0.210	0.005	1.645	31.120	0.150	5.340	0.120	41.800
-323	1.287	0.006	0.210	0.005	1.707	32.690	0.150	5.340	0.120	43.370
-324	1.350	0.006	0.210	0.005	1.770	34.290	0.150	5.340	0.120	44.970
-325	1.475	0.010	0.210	0.005	1.895	37.470	0.250	5.340	0.120	48.150
-326	1.600	0.010	0.210	0.005	2.020	40.650	0.250	5.340	0.120	51.330
-327	1.725	0.010	0.210	0.005	2.145	43.820	0.250	5.340	0.120	54.500
-328	1.850	0.010	0.210	0.005	2.270	46.990	0.250	5.340	0.120	57.670
-329	1.975	0.010	0.210	0.005	2.395	50.160	0.250	5.340	0.120	60.840
-330	2.100	0.010	0.210	0.005	2.520	53.340	0.250	5.340	0.120	64.020
-331	2.225	0.010	0.210	0.005	2.645	56.520	0.250	5.340	0.120	67.200
-332	2.350	0.010	0.210	0.005	2.770	59.690	0.250	5.340	0.120	70.370
-333	2.475	0.010	0.210	0.005	2.895	62.870	0.250	5.340	0.120	73.550
-334	2.600	0.010	0.210	0.005	3.020	66.040	0.250	5.340	0.120	76.720
-335	2.725	0.015	0.210	0.005	3.145	69.220	0.380	5.340	0.120	79.900
-336	2.850	0.015	0.210	0.005	3.270	72.390	0.380	5.340	0.120	83.070
-337	2.975	0.015	0.210	0.005	3.395	75.570	0.380	5.340	0.120	86.250
-338	3.100	0.015	0.210	0.005	3.520	78.740	0.380	5.340	0.120	89.420
-339	3.225	0.015	0.210	0.005	3.645	81.920	0.380	5.340	0.120	92.600
-340	3.350	0.015	0.210	0.005	3.770	85.090	0.380	5.340	0.120	95.770
-341	3.475	0.015	0.210	0.005	3.895	88.270	0.380	5.340	0.120	98.950
-342	3.600	0.015	0.210	0.005	4.020	91.440	0.380	5.340	0.120	102.120
-343	3.725	0.015	0.210	0.005	4.145	94.620	0.380	5.340	0.120	105.300
-344	3.850	0.015	0.210	0.005	4.270	97.790	0.380	5.340	0.120	108.470
-345	3.975	0.015	0.210	0.005	4.395	100.960	0.380	5.340	0.120	111.640
-346	4.100	0.015	0.210	0.005	4.520	104.140	0.380	5.340	0.120	114.820
-347	4.225	0.015	0.210	0.005	4.645	107.320	0.380	5.340	0.120	118.000
-348	4.350	0.015	0.210	0.005	4.770	110.490	0.380	5.340	0.120	121.170
-349	4.475	0.015	0.210	0.005	4.895	113.670	0.380	5.340	0.120	124.350
-350	4.600	0.015	0.210	0.005	5.020	116.840	0.380	5.340	0.120	127.520
-351	4.725	0.015	0.210	0.005	5.145	120.020	0.380	5.340	0.120	130.700
-352	4.850	0.015	0.210	0.005	5.270	123.190	0.380	5.340	0.120	133.870
-353	4.975	0.015	0.210	0.005	5.395	126.370	0.380	5.340	0.120	137.050
-354	5.100	0.023	0.210	0.005	5.520	129.540	0.580	5.340	0.120	140.220
-355	5.225	0.023	0.210	0.005	5.645	132.720	0.580	5.340	0.120	143.400
-356	5.350	0.023	0.210	0.005	5.770	135.890	0.580	5.340	0.120	146.570
-357	5.475	0.023	0.210	0.005	5.895	139.070	0.580	5.340	0.120	149.750
-358	5.600	0.023	0.210	0.005	6.020	142.240	0.580	5.340	0.120	152.920
-359	5.725	0.023	0.210	0.005	6.145	145.420	0.580	5.340	0.120	156.100
-360	5.850	0.023	0.210	0.005	6.270	148.590	0.580	5.340	0.120	159.270
-361	5.975	0.023	0.210	0.005	6.395	151.770	0.580	5.340	0.120	162.450
-362	6.225	0.023	0.210	0.005	6.645	158.120	0.580	5.340	0.120	168.800
-363	6.475	0.023	0.210	0.005	6.895	164.470	0.580	5.340	0.120	175.150
-364	6.725	0.023	0.210	0.005	7.145	170.820	0.580	5.340	0.120	181.500
-365	6.975	0.023	0.210	0.005	7.395	177.170	0.580	5.340	0.120	187.850
-366	7.225	0.030	0.210	0.005	7.645	183.520	0.760	5.340	0.120	194.200
-367	7.475	0.030	0.210	0.005	7.895	189.870	0.760	5.340	0.120	200.550
-368	7.725	0.030	0.210	0.005	8.145	196.220	0.760	5.340	0.120	206.900
-369	7.975	0.030	0.210	0.005	8.395	202.570	0.760	5.340	0.120	213.250
-370	8.225	0.030	0.210	0.005	8.645	208.920	0.760	5.340	0.120	219.600
-371	8.475	0.030	0.210	0.005	8.895	215.270	0.760	5.340	0.120	225.950
-372	8.725	0.030	0.210	0.005	9.145	221.620	0.760	5.340	0.120	232.300
-373	8.975	0.030	0.210	0.005	9.395	227.970	0.760	5.340	0.120	238.650
-374	9.225	0.030	0.210	0.005	9.645	234.320	0.760	5.340	0.120	245.000
-375	9.475	0.030	0.210	0.005	9.895	240.670	0.760	5.340	0.120	251.350
-376	9.725	0.030	0.210	0.005	10.145	247.020	0.760	5.340	0.120	257.700
-377	9.975	0.030	0.210	0.005	10.395	253.370	0.760	5.340	0.120	264.050
-378	10.475	0.030	0.210	0.005	10.895	266.070	0.760	5.340	0.120	276.750
-379	10.975	0.030	0.210	0.005	11.395	278.770	0.760	5.340	0.120	289.450
-380	11.475	0.030	0.210	0.005	11.895	291.470	0.760	5.340	0.120	302.150
-381	11.975	0.030	0.210	0.005	12.395	304.170	0.760	5.340	0.120	314.850
-382	12.975	0.030	0.210	0.005	13.395	329.570	0.760	5.340	0.120	340.250
-383	13.975	0.030	0.210	0.005	14.395	354.970	0.760	5.340	0.120	365.650
-384	14.975	0.030	0.210	0.005	15.395	380.370	0.760	5.340	0.120	391.050
-385	15.955	0.045	0.210	0.005	16.375	405.260	1.140	5.340	0.120	415.940
-386	16.955	0.045	0.210	0.005	17.375	430.660	1.140	5.340	0.120	441.340
-387	17.955	0.045	0.210	0.005	18.375	456.060	1.140	5.340	0.120	466.740
-388	18.955	0.045	0.210	0.005	19.375	481.460	1.140	5.340	0.120	492.140
-389	19.955	0.045	0.210	0.005	20.375	506.860	1.140	5.340	0.120	517.540
-390	20.955	0.045	0.210	0.005	21.375	532.260	1.140	5.340	0.120	542.940
-391	21.955	0.045	0.210	0.005	22.375	557.660	1.140	5.340	0.120	568.340
-392	22.940	0.060	0.210	0.005	23.360	582.700	1.500	5.340	0.120	593.380
-393	23.940	0.060	0.210	0.005	24.360	608.100	1.500	5.340	0.120	618.780
-394	24.940	0.060	0.210	0.005	25.360	633.500	1.500	5.340	0.120	644.180
-395	25.940	0.060	0.210	0.005	26.360	658.900	1.500	5.340	0.120	669.580
-425	4.475	0.015	0.275	0.006	5.025	113.670	0.380	6.990	0.150	127.650
-426	4.600	0.015	0.275	0.006	5.150	116.840	0.380	6.990	0.150	130.820
-427	4.725	0.015	0.275	0.006	5.275	120.020	0.380	6.990	0.150	134.000
-428	4.850	0.015	0.275	0.006	5.400	123.190	0.380	6.990	0.150	137.170
-429	4.975	0.015	0.275	0.006	5.525	126.370	0.380	6.990	0.150	140.350
-430	5.100	0.023	0.275	0.006	5.650	129.540	0.580	6.990	0.150	143.520
-431	5.225	0.023	0.275	0.006	5.775	132.720	0.580	6.990	0.150	146.700
-432	5.350	0.023	0.275	0.006	5.900	135.890	0.580	6.990	0.150	149.870
-433	5.475	0.023	0.275	0.006	6.025	139.070	0.580	6.990	0.150	153.050
-434	5.600	0.023	0.275	0.006	6.150	142.240	0.580	6.990	0.150	156.220
-435	5.725	0.023	0.275	0.006	6.275	145.420	0.580	6.990	0.150	159.400
-436	5.850	0.023	0.275	0.006	6.400	148.590	0.580	6.990	0.150	162.570
-437	5.975	0.023	0.275	0.006	6.525	151.770	0.580	6.990	0.150	165.750
-438	6.225	0.023	0.275	0.006	6.775	158.120	0.580	6.990	0.150	172.100
-439	6.475	0.023	0.275	0.006	7.025	164.470	0.580	6.990	0.150	178.450
-440	6.725	0.023	0.275	0.006	8.275	170.820	0.580	6.990	0.150	184.800
-441	6.975	0.023	0.275	0.006	7.525	177.170	0.580	6.990	0.150	191.150
-442	7.225	0.030	0.275	0.006	7.775	183.520	0.760	6.990	0.150	197.500
-443	7.475	0.030	0.275	0.006	8.025	189.870	0.760	6.990	0.150	203.850
-444	7.725	0.030	0.275	0.006	8.275	196.220	0.760	6.990	0.150	210.200
-445	7.975	0.030	0.275	0.006	8.525	202.570	0.760	6.990	0.150	216.550
-446	8.475	0.030	0.275	0.006	9.025	215.270	0.760	6.990	0.150	229.250
-447	8.975	0.030	0.275	0.006	9.525	227.970	0.760	6.990	0.150	241.950
-448	9.475	0.030	0.275	0.006	10.025	240.670	0.760	6.990	0.150	254.650
-449	9.975	0.030	0.275	0.006	10.525	253.370	0.760	6.990	0.150	267.350
-450	10.475	0.030	0.275	0.006	11.025	266.070	0.760	6.990	0.150	280.050
-451	10.975	0.030	0.275	0.006	11.525	278.770	0.760	6.990	0.150	292.750
-452	11.475	0.030	0.275	0.006	12.025	291.470	0.760	6.990	0.150	305.450
-453	11.975	0.030	0.275	0.006	12.525	304.170	0.760	6.990	0.150	318.150
-454	12.475	0.030	0.275	0.006	13.025	316.870	0.760	6.990	0.150	330.850
-455	12.975	0.030	0.275	0.006	13.525	329.570	0.760	6.990	0.150	343.550
-456	13.475	0.030	0.275	0.006	14.025	342.270	0.760	6.990	0.150	356.250
-457	13.975	0.030	0.275	0.006	14.525	354.970	0.760	6.990	0.150	368.950
-458	14.475	0.030	0.275	0.006	15.025	367.670	0.760	6.990	0.150	381.650
-459	14.975	0.030	0.275	0.006	15.525	380.370	0.760	6.990	0.150	394.350
-460	15.475	0.030	0.275	0.006	16.025	393.080	0.760	6.990	0.150	407.060
-461	15.955	0.045	0.275	0.006	16.505	405.260	1.140	6.990	0.150	419.240
-462	16.455	0.045	0.275	0.006	17.005	417.960	1.140	6.990	0.150	431.940
-463	16.955	0.045	0.275	0.006	17.505	430.660	1.140	6.990	0.150	444.640
-464	17.455	0.045	0.275	0.006	18.005	443.360	1.140	6.990	0.150	457.340
-465	17.955	0.045	0.275	0.006	18.505	456.060	1.140	6.990	0.150	470.040
-466	18.455	0.045	0.275	0.006	19.005	468.760	1.140	6.990	0.150	482.740
-467	18.955	0.045	0.275	0.006	19.505	481.460	1.140	6.990	0.150	495.440
-468	19.455	0.045	0.275	0.006	20.005	494.160	1.140	6.990	0.150	508.140
-469	19.955	0.045	0.275	0.006	20.505	506.860	1.140	6.990	0.150	520.840
-470	20.955	0.045	0.275	0.006	21.505	532.260	1.140	6.990	0.150	546.240
-471	21.955	0.045	0.275	0.006	22.505	557.660	1.140	6.990	0.150	571.640
-472	22.940	0.060	0.275	0.006	23.490	582.700	1.500	6.990	0.150	596.680
-473	23.940	0.060	0.275	0.006	24.490	608.100	1.500	6.990	0.150	622.080
-474	24.940	0.060	0.275	0.006	25.490	633.500	1.500	6.990	0.150	647.480
-475	25.940	0.060	0.275	0.006	26.490	658.900	1.500	6.990	0.150	672.880
-901	0.185	0.005	0.056	0.003	0.297	4.700	0.120	1.420	0.080	7.540
-902	0.239	0.005	0.064	0.003	0.367	6.070	0.120	1.630	0.080	9.330
-903	0.301	0.005	0.064	0.003	0.429	7.650	0.120	1.630	0.080	10.910
-904	0.351	0.005	0.072	0.003	0.495	8.920	0.120	1.830	0.080	12.580
-905	0.414	0.005	0.072	0.003	0.558	10.520	0.120	1.830	0.080	14.180
-906	0.468	0.005	0.078	0.003	0.624	11.890	0.120	1.980	0.080	15.850
-907	0.530	0.005	0.082	0.003	0.694	13.470	0.120	2.080	0.080	17.630
-908	0.644	0.005	0.087	0.003	0.818	16.360	0.120	2.210	0.080	20.780
-909	0.706	0.005	0.097	0.003	0.900	17.940	0.120	2.460	0.080	22.860
-910	0.755	0.005	0.097	0.003	0.949	19.180	0.120	2.460	0.080	24.100
-911	0.863	0.005	0.116	0.004	1.095	21.920	0.150	2.950	0.100	27.820
-912	0.924	0.006	0.116	0.004	1.156	23.470	0.150	2.950	0.100	29.370
-913	0.986	0.006	0.116	0.004	1.218	25.040	0.150	2.950	0.100	30.940
-914	1.047	0.006	0.116	0.004	1.279	26.600	0.150	2.950	0.100	32.500
-916	1.171	0.006	0.116	0.004	1.403	29.750	0.150	2.950	0.100	35.650
-918	1.355	0.006	0.116	0.004	1.587	34.420	0.150	2.950	0.100	40.320
-920	1.475	0.010	0.118	0.004	1.711	37.460	0.250	3.000	0.100	43.460
-924	1.720	0.010	0.118	0.004	1.956	43.680	0.250	3.000	0.100	49.680
-928	2.090	0.010	0.118	0.004	2.326	53.090	0.250	3.000	0.100	59.090
-932	2.337	0.010	0.118	0.004	2.573	59.360	0.250	3.000	0.100	65.360

Tips for Specifying and Measuring O-Ring Sizes

Use Standard O-Ring Sizing When Possible: Leverage standardized sizes, such as those defined by SAE AS568, to simplify selection and ensure compatibility with existing hardware designs.
Consider the Application: When specifying size, factor in the application’s dynamic or static nature. Dynamic applications may require tighter fits and different groove dimensions to prevent movement and wear.
Measure Accurately: Utilize precise calibrated measuring inspection tools, such as calipers, to determine the dimensions of the groove or shaft the O-Ring will seal. Ensure measurements of the proper fit account for any potential manufacturing tolerances.
Consult Compatibility Charts: Consult size compatibility charts or contact experts like Sealing Devices, Inc. for guidance on selecting the optimal O-ring size for your specific application.

Sealing Devices offers over a million o-rings in standard and non-standard sizes. We work with leading suppliers such as Parker and Freudenberg to maintain inventory of popular sizes and to supply o-rings that are not readily available. Our applications engineers are readily available to help you determine the right product for the job.

Our o-rings are made from many compounds, including but not limited to:

FFKM O-Rings

Perfluoroelastomer (FFKM; Kalrez) O-rings offer resistance to the highest temperatures of any rubber, coupled with extremely broad chemical compatibility and very low extractable levels.

FKM Viton O-Rings

(FKM/fluorocarbon) Viton O-rings offer strong chemical compatibility with good high-temperature performance and good compression set resistance.

FMVQ (Fluorosilicone) O-Rings

Good resistance to fuel, oil and solvent resistance for ozone, aromatic hydrocarbons, sunlight and chlorinated materials.

Neoprene O-Rings

Cost-effective solution for good ozone resistance, and fair resistance to petroleum oils.

Silicone O-Rings

Long life against sunlight and ozone in dry heat applications.

Buna-N O-Rings

(NBR, nitrile) excellent oil, fuel and petroleum resistance. Good for greases, hydraulic fluids, water.

Ethylene Propylene O-Rings

(EPDM) Good for resistance to steam/hot water, alkalies, alcohol, automotive fluids.

AFLAS O-Rings

AFLAS O-Rings are resistant to a wide range of chemicals, making them ideal for engine coolants and automotive fluids.

Non-Standard Size O-Rings

For non-standard or larger sizes we offer non-molded, spliced and vulcanized O-Rings for select materials.
Request a Quote

Contact Us for Assistance or Samples

When specifying O-Rings be sure to include the standard dash size, material, and durometer along with any other requirements or standards.
(Ex. AS568 Size 2-011 Silicone 50 Durometer, meeting AMS 3304)
Contact Us

Compare O-Ring Materials and Chemical Compatibility

Compare O-Ring materials and O-Ring chemical compatibility with this chart.
View Chart

O-Ring Size Chart for Standard O-Ring Dimensions

AS568 Standard O-Ring Size Chart

FFKM O-Rings

FKM Viton O-Rings

FMVQ (Fluorosilicone) O-Rings

Neoprene O-Rings

Silicone O-Rings

Buna-N O-Rings

Ethylene Propylene O-Rings

AFLAS O-Rings

Non-Standard Size O-Rings

Contact Us for Assistance or Samples

Compare O-Ring Materials and Chemical Compatibility

716.684.7600

Products

Industries

Capabilities

Resources