For Mores - One Name Matches All!

		O-RING & Oil Seal
		Custom Rubber
		Rubber Auto Parts
		Silicone Products
		Hardware Rubber
		O-RING Cords
		Material Properties
		O-RING Size
		Catalog Download

O-RING

An O-ring is a round ring that is used as a gasket for sealing a connection. O-rings are typically constructed out of polyurethane, silicone, neoprene, nitrile rubber or fluorocarbon. These rings are commonly used in mechanical applications, such as pipe connections, and help to ensure a tight seal between two objects. O-rings are designed to be seated in a groove or housing that keeps the ring in place. Once in its track, the ring is compressed between the two pieces and, in turn, creates a strong seal where they meet.

The seal that a rubber O-ring creates can either exist in a motionless joint, such as between piping, or a movable joint, such as a hydraulic cylinder. However, movable joints often require that the O-ring be lubricated. In a moving enclosure this ensures slower deterioration of the O-ring and therefore, extends the useful life of the product.

O-rings are both inexpensive and simple in design and are therefore very popular in manufacturing and industry. If mounted correctly, O-rings can withstand a very large amount of pressure and are therefore used in many applications where leaks or loss of pressure are unacceptable. For instance, O-rings used in hydraulic cylinders prevent leakage of hydraulic fluid and allow for the system to create and withstand the pressures required for operation.

Rubber Material Properties

◎ Excellent ○ Good □ Fair ◇ Limited ▼ Poor

	NR	SBR	BR	EPDM	CR	NBR	ACM	SI	FKM
Tensile Strength	◎	○	◇	◇	○	○	▼	▼	○
Elongation	◎	○	◇	○	○	○	▼	◎	▼
Rebound Resistance	◎	◇	◎	○	◎	○	◇	◇	◇
Tear Resistance	◎	◇	◇	◇	○	○	▼	▼	◇
Abrasion-Resistance	◎	◎	◎	○	○	◎	◇	▼	◇
Impact Strength Resistance	◎	◎	○	○	◎	○	▼	▼	◇
Air Impermeability Resistance	◇	◇	◇	◇	◎	○	◇	▼	○
Oxygen Resistance	◇	◇	◇	○	○	◇	○	◎	◎
Ozone Resistance	▼	▼	▼	◎	○	▼	○	◎	◎
Weathering Resistance	◇	◇	◇	◎	○	◇	○	◎	◎
Sunlight Resistance	▼	◇	◇	◎	○	▼	○	◎	◎
Heat Resistance	▼	◇	◇	◎	○	◇	○	◎	◎
Low Temperature Resistance	○	◇	○	○	◇	◇	▼	◎	○
Oil and Fuel Resistance	▼	▼	▼	▼	□	○	○	◇	◎
Oxygenated-Solvent Resistance	○	○	○	◎	▼	▼	▼	◇	▼
Water Resistance	◎	○	◎	◎	○	○	▼	○	○

O-RING SIZE

O-RING SIZE Ref. AS568	O-RING STASNDASRD SIZE INCHES		O-RING STASNDASRD SIZE MILLIMETERS
O-RING SIZE Ref. AS568	ID	W	ID	W
AS-001	0.029	0.040	0.74	1.02
AS-002	0.042	0.050	1.07	1.27
AS-003	0.056	0.060	1.42	1.52
AS-004	0.070	0.070	1.78	1.78
AS-005	0.101	0.070	2.57	1.78
AS-006	0.114	0.070	2.90	1.78
AS-007	0.145	0.070	3.68	1.78
AS-008	0.176	0.070	4.47	1.78
AS-009	0.208	0.070	5.28	1.78
AS-010	0.239	0.070	6.07	1.78
AS-011	0.301	0.070	7.65	1.78
AS-012	0.364	0.070	9.25	1.78
AS-013	0.426	0.070	10.82	1.78
AS-014	0.489	0.070	12.42	1.78
AS-015	0.551	0.070	14.00	1.78
AS-016	0.614	0.070	15.60	1.78
AS-017	0.676	0.070	17.17	1.78
AS-018	0.739	0.070	18.77	1.78
AS-019	0.801	0.070	20.35	1.78
AS-020	0.864	0.070	21.95	1.78
AS-021	0.926	0.070	23.52	1.78
AS-022	0.989	0.070	25.12	1.78
AS-023	1.051	0.070	26.70	1.78
AS-024	1.114	0.070	28.30	1.78
AS-025	1.176	0.070	29.87	1.78
AS-026	1.239	0.070	31.47	1.78
AS-027	1.301	0.070	33.05	1.78
AS-028	1.364	0.070	34.65	1.78
AS-029	1.489	0.070	37.82	1.78
AS-030	1.614	0.070	41.00	1.78
AS-031	1.739	0.070	44.17	1.78
AS-032	1.864	0.070	47.35	1.78
AS-033	1.989	0.070	50.52	1.78
AS-034	2.114	0.070	53.70	1.78
AS-035	2.239	0.070	56.87	1.78

O-RING AS- 001

O-RING SIZE Ref. AS568	O-RING STASNDASRD SIZE INCHES		O-RING STASNDASRD SIZE MILLIMETERS
O-RING SIZE Ref. AS568	ID	W	ID	W
AS-036	2.364	0.070	60.05	1.78
AS-037	2.489	0.070	63.22	1.78
AS-038	2.614	0.070	66.40	1.78
AS-039	2.739	0.070	69.57	1.78
AS-040	2.864	0.070	72.75	1.78
AS-041	2.989	0.070	75.92	1.78
AS-042	3.239	0.070	82.27	1.78
AS-043	3.489	0.070	88.62	1.78
AS-044	3.739	0.070	94.97	1.78
AS-045	3.989	0.070	101.32	1.78
AS-046	4.239	0.070	107.67	1.78
AS-047	4.489	0.070	114.02	1.78
AS-048	4.739	0.070	120.37	1.78
AS-049	4.989	0.070	126.72	1.78
AS-050	5.239	0.070	133.07	1.78
AS-102	0.049	0.103	1.24	2.62
AS-103	0.081	0.103	2.06	2.62
AS-104	0.112	0.103	2.84	2.62
AS-105	0.143	0.103	3.63	2.62
AS-106	0.174	0.103	4.42	2.62
AS-107	0.206	0.103	5.23	2.62
AS-108	0.237	0.103	6.02	2.62
AS-109	0.299	0.103	7.59	2.62
AS-110	0.362	0.103	9.19	2.62
AS-111	0.424	0.103	10.77	2.62
AS-112	0.487	0.103	12.37	2.62
AS-113	0.549	0.103	13.94	2.62
AS-114	0.612	0.103	15.54	2.62
AS-115	0.674	0.103	17.12	2.62
AS-116	0.737	0.103	18.72	2.62
AS-117	0.799	0.103	20.30	2.62
AS-118	0.862	0.103	21.89	2.62
AS-119	0.924	0.103	23.47	2.62
AS-120	0.987	0.103	25.07	2.62
AS-121	1.049	0.103	26.64	2.62

O-RING AS-001 O-RING AS-036

O-RING SIZE Ref. AS568	O-RING STASNDASRD SIZE INCHES		O-RING STASNDASRD SIZE MILLIMETERS
O-RING SIZE Ref. AS568	ID	W	ID	W
AS-122	1.112	0.103	28.24	2.62
AS-123	1.174	0.103	29.82	2.62
AS-124	1.237	0.103	31.42	2.62
AS-125	1.299	0.103	32.99	2.62
AS-126	1.362	0.103	34.59	2.62
AS-127	1.424	0.103	36.17	2.62
AS-128	1.487	0.103	37.77	2.62
AS-129	1.549	0.103	39.34	2.62
AS-130	1.612	0.103	40.94	2.62
AS-131	1.674	0.103	42.52	2.62
AS-132	1.737	0.103	44.12	2.62
AS-133	1.799	0.103	45.69	2.62
AS-134	1.862	0.103	47.29	2.62
AS-135	1.925	0.103	48.90	2.62
AS-136	1.987	0.103	50.47	2.62
AS-137	2.050	0.103	52.07	2.62
AS-138	2.112	0.103	53.64	2.62
AS-139	2.175	0.103	55.25	2.62
AS-140	2.237	0.103	56.82	2.62
AS-141	2.300	0.103	58.42	2.62
AS-142	2.362	0.103	59.99	2.62
AS-143	2.425	0.103	61.60	2.62
AS-144	2.487	0.103	63.17	2.62
AS-145	2.550	0.103	64.77	2.62
AS-146	2.612	0.103	66.34	2.62
AS-147	2.675	0.103	67.95	2.62
AS-148	2.737	0.103	69.52	2.62
AS-149	2.800	0.103	71.12	2.62
AS-150	2.862	0.103	72.69	2.62
AS-151	2.987	0.103	75.87	2.62
AS-152	3.237	0.103	82.22	2.62
AS-153	3.487	0.103	88.57	2.62
AS-154	3.737	0.103	94.92	2.62
AS-155	3.987	0.103	101.27	2.62
AS-156	4.237	0.103	107.62	2.62

O-RING AS-001 O-RING AS-122

O-RING SIZE Ref. AS568	O-RING STASNDASRD SIZE INCHES		O-RING STASNDASRD SIZE MILLIMETERS
O-RING SIZE Ref. AS568	ID	W	ID	W
AS-157	4.487	0.103	113.97	2.62
AS-158	4.737	0.103	120.32	2.62
AS-159	4.987	0.103	126.67	2.62
AS-160	5.237	0.103	133.02	2.62
AS-161	5.487	0.103	139.37	2.62
AS-162	5.737	0.103	145.72	2.62
AS-163	5.987	0.103	152.07	2.62
AS-164	6.237	0.103	158.42	2.62
AS-165	6.487	0.103	164.77	2.62
AS-166	6.737	0.103	171.12	2.62
AS-167	6.987	0.103	177.47	2.62
AS-168	7.237	0.103	183.82	2.62
AS-169	7.487	0.103	190.17	2.62
AS-170	7.737	0.103	196.52	2.62
AS-171	7.987	0.103	202.87	2.62
AS-172	8.237	0.103	209.22	2.62
AS-173	8.487	0.103	215.57	2.62
AS-174	8.737	0.103	221.92	2.62
AS-175	8.987	0.103	228.27	2.62
AS-176	9.237	0.103	234.62	2.62
AS-177	9.487	0.103	240.97	2.62
AS-178	9.737	0.103	247.32	2.62
AS-201	0.171	0.139	4.34	3.53
AS-202	0.234	0.139	5.94	3.53
AS-203	0.296	0.139	7.52	3.53
AS-204	0.359	0.139	9.12	3.53
AS-205	0.421	0.139	10.69	3.53
AS-206	0.484	0.139	12.29	3.53
AS-207	0.546	0.139	13.87	3.53
AS-208	0.609	0.139	15.47	3.53
AS-209	0.671	0.139	17.04	3.53
AS-210	0.734	0.139	18.64	3.53
AS-211	0.796	0.139	20.22	3.53
AS-212	0.859	0.139	21.82	3.53
AS-213	0.921	0.139	23.39	3.53

O-RING AS-001 O-RING AS-157

O-RING SIZE Ref. AS568	O-RING STASNDASRD SIZE INCHES		O-RING STASNDASRD SIZE MILLIMETERS
O-RING SIZE Ref. AS568	ID	W	ID	W
AS-214	0.984	0.139	24.99	3.53
AS-215	1.046	0.139	26.57	3.53
AS-216	1.109	0.139	28.17	3.53
AS-217	1.171	0.139	29.74	3.53
AS-218	1.234	0.139	31.34	3.53
AS-219	1.296	0.139	32.92	3.53
AS-220	1.359	0.139	34.52	3.53
AS-221	1.421	0.139	36.09	3.53
AS-222	1.484	0.139	37.69	3.53
AS-223	1.609	0.139	40.87	3.53
AS-224	1.734	0.139	44.04	3.53
AS-225	1.859	0.139	47.22	3.53
AS-226	1.984	0.139	50.39	3.53
AS-227	2.109	0.139	53.57	3.53
AS-228	2.234	0.139	56.74	3.53
AS-229	2.359	0.139	59.92	3.53
AS-230	2.484	0.139	63.09	3.53
AS-231	2.609	0.139	66.27	3.53
AS-232	2.734	0.139	69.44	3.53
AS-233	2.859	0.139	72.62	3.53
AS-234	2.984	0.139	75.79	3.53
AS-235	3.109	0.139	78.97	3.53
AS-236	3.234	0.139	82.14	3.53
AS-237	3.359	0.139	85.32	3.53
AS-238	3.484	0.139	88.49	3.53
AS-239	3.609	0.139	91.67	3.53
AS-240	3.734	0.139	94.84	3.53
AS-241	3.859	0.139	98.02	3.53
AS-242	3.984	0.139	101.19	3.53
AS-243	4.109	0.139	104.37	3.53
AS-244	4.234	0.139	107.54	3.53
AS-245	4.359	0.139	110.72	3.53
AS-246	4.484	0.139	113.89	3.53
AS-247	4.609	0.139	117.07	3.53
AS-248	4.734	0.139	120.24	3.53

O-RING AS-001 O-RING AS-214

O型環 SIZE Ref. AS568	O型環 STASNDASRD SIZE INCHES		O型環 STASNDASRD SIZE MILLIMETERS
O型環 SIZE Ref. AS568	ID	W	ID	W
AS-249	4.859	0.139	123.42	3.53
AS-250	4.984	0.139	126.59	3.53
AS-251	5.109	0.139	129.77	3.53
AS-252	5.234	0.139	132.94	3.53
AS-253	5.359	0.139	136.12	3.53
AS-254	5.484	0.139	139.29	3.53
AS-255	5.609	0.139	142.47	3.53
AS-256	5.734	0.139	145.64	3.53
AS-257	5.859	0.139	148.82	3.53
AS-258	5.984	0.139	151.99	3.53
AS-259	6.234	0.139	158.34	3.53
AS-260	6.484	0.139	164.69	3.53
AS-261	6.734	0.139	171.04	3.53
AS-262	6.984	0.139	177.39	3.53
AS-263	7.234	0.139	183.74	3.53
AS-264	7.484	0.139	190.09	3.53
AS-265	7.734	0.139	196.44	3.53
AS-266	7.984	0.139	202.79	3.53
AS-267	8.234	0.139	209.14	3.53
AS-268	8.484	0.139	215.49	3.53
AS-269	8.784	0.139	221.84	3.53
AS-270	8.984	0.139	228.19	3.53
AS-271	9.234	0.139	234.54	3.53
AS-272	9.484	0.139	240.89	3.53
AS-273	9.734	0.139	247.24	3.53
AS-274	9.984	0.139	253.59	3.53
AS-275	10.484	0.139	266.29	3.53
AS-276	10.984	0.139	278.99	3.53
AS-277	11.484	0.139	291.69	3.53
AS-278	11.984	0.139	304.39	3.53
AS-279	12.984	0.139	329.79	3.53
AS-280	13.984	0.139	355.19	3.53
AS-281	14.984	0.139	380.59	3.53
AS-282	15.955	0.139	405.26	3.53
AS-283	16.955	0.139	430.66	3.53

O-RING AS-001 O-RING AS-249

O-RING SIZE Ref. AS568	O-RING STASNDASRD SIZE INCHES		O-RING STASNDASRD SIZE MILLIMETERS
O-RING SIZE Ref. AS568	ID	W	ID	W
AS-284	17.955	0.139	456.06	3.53
AS-309	0.412	0.210	10.46	5.33
AS-310	0.475	0.210	12.07	5.33
AS-311	0.537	0.210	13.64	5.33
AS-312	0.600	0.210	15.24	5.33
AS-313	0.662	0.210	16.81	5.33
AS-314	0.725	0.210	18.42	5.33
AS-315	0.787	0.210	19.99	5.33
AS-316	0.850	0.210	21.59	5.33
AS-317	0.912	0.210	23.16	5.33
AS-318	0.975	0.210	24.77	5.33
AS-319	1.037	0.210	26.34	5.33
AS-320	1.100	0.210	27.94	5.33
AS-321	1.162	0.210	29.51	5.33
AS-322	1.225	0.210	31.12	5.33
AS-323	1.287	0.210	32.69	5.33
AS-324	1.350	0.210	34.29	5.33
AS-325	1.475	0.210	37.47	5.33
AS-326	1.600	0.210	40.64	5.33
AS-327	1.725	0.210	43.82	5.33
AS-328	1.850	0.210	46.99	5.33
AS-329	1.975	0.210	50.17	5.33
AS-330	2.100	0.210	53.34	5.33
AS-331	2.225	0.210	56.52	5.33
AS-332	2.350	0.210	59.69	5.33
AS-333	2.475	0.210	62.87	5.33
AS-334	2.600	0.210	66.04	5.33
AS-335	2.725	0.210	69.22	5.33
AS-336	2.850	0.210	72.39	5.33
AS-337	2.975	0.210	75.57	5.33
AS-338	3.100	0.210	78.74	5.33
AS-339	3.225	0.210	81.92	5.33
AS-340	3.350	0.210	85.09	5.33
AS-341	3.475	0.210	88.27	5.33
AS-342	3.600	0.210	91.44	5.33

O-RING AS-001 O-RING AS-284

O-RING SIZE Ref. AS568	O-RING STASNDASRD SIZE INCHES		O-RING STASNDASRD SIZE MILLIMETERS
O-RING SIZE Ref. AS568	ID	W	ID	W
AS-343	3.725	0.210	94.62	5.33
AS-344	3.850	0.210	97.79	5.33
AS-345	3.975	0.210	100.97	5.33
AS-346	4.100	0.210	104.14	5.33
AS-347	4.225	0.210	107.32	5.33
AS-348	4.350	0.210	110.49	5.33
AS-349	4.475	0.210	113.67	5.33
AS-350	4.600	0.210	116.84	5.33
AS-351	4.725	0.210	120.02	5.33
AS-352	4.850	0.210	123.19	5.33
AS-353	4.975	0.210	126.37	5.33
AS-354	5.100	0.210	129.54	5.33
AS-355	5.225	0.210	132.72	5.33
AS-356	5.350	0.210	135.89	5.33
AS-357	5.475	0.210	139.07	5.33
AS-358	5.600	0.210	142.24	5.33
AS-359	5.725	0.210	145.42	5.33
AS-360	5.850	0.210	148.59	5.33
AS-361	5.975	0.210	151.77	5.33
AS-362	6.225	0.210	158.12	5.33
AS-363	6.475	0.210	164.47	5.33
AS-364	6.725	0.210	170.82	5.33
AS-365	6.975	0.210	177.17	5.33
AS-366	7.225	0.210	183.52	5.33
AS-367	7.475	0.210	189.87	5.33
AS-368	7.725	0.210	196.22	5.33
AS-369	7.975	0.210	202.57	5.33
AS-370	8.225	0.210	208.92	5.33
AS-371	8.475	0.210	215.27	5.33
AS-372	8.725	0.210	221.62	5.33
AS-373	8.975	0.210	227.97	5.33
AS-374	9.225	0.210	234.32	5.33
AS-375	9.475	0.210	240.67	5.33
AS-376	9.725	0.210	247.02	5.33
AS-377	9.975	0.210	253.37	5.33

O-RING AS-001 O-RING AS-343

O-RING SIZE Ref. AS568	O-RING STASNDASRD SIZE INCHES		O-RING STASNDASRD SIZE MILLIMETERS
O-RING SIZE Ref. AS568	ID	W	ID	W
AS-378	10.475	0.210	266.07	5.33
AS-379	10.975	0.210	278.77	5.33
AS-380	11.475	0.210	291.47	5.33
AS-381	11.975	0.210	304.17	5.33
AS-382	12.975	0.210	329.57	5.33
AS-383	13.975	0.210	354.97	5.33
AS-384	14.975	0.210	380.37	5.33
AS-385	15.955	0.210	405.26	5.33
AS-386	16.955	0.210	430.66	5.33
AS-387	17.955	0.210	456.06	5.33
AS-388	18.955	0.210	481.41	5.33
AS-389	19.955	0.210	506.81	5.33
AS-390	20.955	0.210	532.21	5.33
AS-391	21.955	0.210	557.61	5.33
AS-392	22.940	0.210	582.68	5.33
AS-393	23.940	0.210	608.08	5.33
AS-394	24.940	0.210	633.48	5.33
AS-395	25.940	0.210	658.88	5.33
AS-425	4.475	0.275	113.67	6.99
AS-426	4.600	0.275	116.84	6.99
AS-427	4.725	0.275	120.02	6.99
AS-428	4.850	0.275	123.19	6.99
AS-429	4.975	0.275	126.37	6.99
AS-430	5.100	0.275	129.54	6.99
AS-431	5.225	0.275	132.72	6.99
AS-432	5.350	0.275	135.89	6.99
AS-433	5.475	0.275	139.07	6.99
AS-434	5.600	0.275	142.24	6.99
AS-435	5.725	0.275	145.42	6.99
AS-436	5.850	0.275	148.59	6.99
AS-437	5.975	0.275	151.77	6.99
AS-438	6.225	0.275	158.12	6.99
AS-439	6.475	0.275	164.47	6.99
AS-440	6.725	0.275	170.82	6.99
AS-441	6.975	0.275	177.17	6.99

O-RING AS-001 O-RING AS-378

O-RING SIZE Ref. AS568	O-RING STASNDASRD SIZE INCHES		O-RING STASNDASRD SIZE MILLIMETERS
O-RING SIZE Ref. AS568	ID	W	ID	W
AS-442	7.225	0.275	183.52	6.99
AS-443	7.475	0.275	189.87	6.99
AS-444	7.725	0.275	196.22	6.99
AS-445	7.975	0.275	202.57	6.99
AS-446	8.475	0.275	215.27	6.99
AS-447	8.975	0.275	227.97	6.99
AS-448	9.475	0.275	240.67	6.99
AS-449	9.975	0.275	253.57	6.99
AS-450	10.475	0.275	266.07	6.99
AS-451	10.975	0.275	278.77	6.99
AS-452	11.475	0.275	291.47	6.99
AS-453	11.975	0.275	304.17	6.99
AS-454	12.475	0.275	316.87	6.99
AS-455	12.975	0.275	329.57	6.99
AS-456	13.475	0.275	342.27	6.99
AS-457	13.975	0.275	354.97	6.99
AS-458	14.475	0.275	367.67	6.99
AS-459	14.975	0.275	380.37	6.99
AS-460	15.475	0.275	397.07	6.99
AS-461	15.955	0.275	405.26	6.99
AS-462	16.455	0.275	417.96	6.99
AS-463	16.955	0.275	430.66	6.99
AS-464	17.455	0.275	443.36	6.99
AS-465	17.955	0.275	456.06	6.99
AS-466	18.455	0.275	468.76	6.99
AS-467	18.955	0.275	481.46	6.99
AS-468	19.455	0.275	494.16	6.99
AS-469	19.955	0.275	506.86	6.99
AS-470	20.955	0.275	532.26	6.99
AS-471	21.955	0.275	557.66	6.99
AS-472	22.940	0.275	582.68	6.99
AS-473	23.940	0.275	608.08	6.99
AS-474	24.940	0.275	633.48	6.99
AS-475	25.940	0.275	658.88	6.99

O-RING AS- 001 O-RING AS- 442

O-RING SIZE Ref. AS568	O-RING STASNDASRD SIZE INCHES		O-RING STASNDASRD SIZE MILLIMETERS
O-RING SIZE Ref. AS568	ID	W	ID	W
M-901	0.185	0.056	4.70	1.42
M-902	0.239	0.064	6.07	1.63
M-903	0.301	0.064	7.65	1.63
M-904	0.351	0.072	8.92	1.83
M-905	0.414	0.072	10.52	1.83
M-906	0.468	0.078	11.89	1.98
M-907	0.530	0.082	13.46	2.08
M-908	0.644	0.087	16.36	2.21
M-909	0.706	0.097	17.93	2.46
M-910	0.755	0.097	19.18	2.46

O-RING SIZE Ref. AS568	O-RING STASNDASRD SIZE INCHES		O-RING STASNDASRD SIZE MILLIMETERS
O-RING SIZE Ref. AS568	ID	W	ID	W
M-911	0.863	0.116	21.92	2.95
M-912	0.924	0.116	23.47	2.95
M-913	0.986	0.116	25.04	2.95
M-914	1.047	0.116	26.59	2.95
M-916	1.171	0.116	29.74	2.95
M-918	1.355	0.116	34.42	2.95
M-920	1.475	0.118	37.47	3.00
M-924	1.720	0.118	43.69	3.00
M-928	2.090	0.118	53.09	3.00
M-932	2.337	0.118	59.36	3.00

No.2, Haiming St., Lukang Township, Changhua County 50562, Taiwan (R.O.C.) mail:formosa.rubber@msa.hinet.net TEL:+886-4-7841886 FAX:+886-4-7841889