Welcome to O-rings.com

Size Chart

This table displays the actual sizes represented by the AS568 Standard Oring "Dash" size chart. Included are 5 different Cross-Sections (0.070 through 0.275 inches), Inside-Diameters ranging from 0.029 to 18.955 inches and 20 Boss Fitting Sizes (-9XX series).
Download the PDF

Dash Number	I.D. (Inches)	Tol. +/-	C.S. (Inches)	Tol. +/-

-001	.029	.004	0.040	.003
-002	.042	.004	0.050	.003
-003	.056	.004	0.060	.003
-004	.070	.005	.070	.003
-005	.101	.005	.070	.003

-006	.114	.005	.070	.003
-007	.145	.005	.070	.003
-008	.176	.005	.070	.003
-009	.208	.005	.070	.003
-010	.239	.005	.070	.003

-011	.301	.005	.070	.003
-012	.364	.005	.070	.003
-013	.426	.005	.070	.003
-014	.489	.005	.070	.003
-015	.551	.007	.070	.003

-016	.614	.009	.070	.003
-017	.676	.009	.070	.003
-018	.739	.009	.070	.003
-019	.801	.009	.070	.003
-020	.864	.009	.070	.003

-021	.926	.009	.070	.003
-022	.989	.010	.070	.003
-023	1.051	.010	.070	.003
-024	1.114	.010	.070	.003
-025	1.176	.011	.070	.003

-026	1.239	.011	.070	.003
-027	1.301	.011	.070	.003
-028	1.364	.013	.070	.003
-029	1.489	.013	.070	.003
-030	1.614	.013	.070	.003

-031	1.739	.015	.070	.003
-032	1.864	.015	.070	.003
-033	1.989	.018	.070	.003
-034	2.114	.018	.070	.003
-035	2.239	.018	.070	.003

-036	2.364	.018	.070	.003
-037	2.489	.018	.070	.003
-038	2.614	.020	.070	.003
-039	2.739	.020	.070	.003
-040	2.864	.020	.070	.003

-041	2.989	.024	.070	.003
-042	3.239	.024	.070	.003
-043	3.489	.024	.070	.003
-044	3.739	.027	.070	.003
-045	3.989	.027	.070	.003

-046	4.239	.030	.070	.003
-047	4.489	.030	.070	.003
-048	4.739	.030	.070	.003
-049	4.989	.037	.070	.003
-050	5.239	.037	.070	.003
Dash Number	I.D. (Inches)	Tol. +/-	C.S. (Inches)	Tol. +/-
-102	.049	.005	.103	.003
-103	.081	.005	.103	.003
-104	.112	.005	.103	.003
-105	.143	.005	.103	.003
-106	.174	.005	.103	.003

-107	.206	.005	.103	.003
-108	.237	.005	.103	.003
-109	.299	.005	.103	.003
-110	.362	.005	.103	.003
-111	.424	.005	.103	.003

-112	.487	.005	.103	.003
-113	.549	.007	.103	.003
-114	.612	.009	.103	.003
-115	.674	.009	.103	.003
-116	.737	.009	.103	.003

-117	.799	.010	.103	.003
-118	.862	.010	.103	.003
-119	.924	.010	.103	.003
-120	.987	.010	.103	.003
-121	1.049	.010	.103	.003

-122	1.112	.010	.103	.003
-123	1.174	.012	.103	.003
-124	1.237	.012	.103	.003
-125	1.299	.012	.103	.003
-126	1.362	.012	.103	.003

-127	1.424	.012	.103	.003
-128	1.487	.012	.103	.003
-129	1.549	.015	.103	.003
-130	1.612	.015	.103	.003
-131	1.674	.015	.103	.003

-132	1.737	.015	.103	.003
-133	1.799	.015	.103	.003
-134	1.862	.015	.103	.003
-135	1.925	.017	.103	.003
-136	1.987	.017	.103	.003

-137	2.050	.017	.103	.003
-138	2.112	.017	.103	.003
-139	2.175	.017	.103	.003
-140	2.237	.017	.103	.003
-141	2.300	.020	.103	.003

-142	2.362	.020	.103	.003
-143	2.425	.020	.103	.003
-144	2.487	.020	.103	.003
-145	2.550	.020	.103	.003
-146	2.612	.020	.103	.003

-147	2.675	.022	.103	.003
-148	2.737	.022	.103	.003
-149	2.800	.022	.103	.003
-150	2.862	.022	.103	.003
-151	2.987	.024	.103	.003

-152	3.237	.024	.103	.003
-153	3.487	.024	.103	.003
-154	3.737	.028	.103	.003
-155	3.987	.028	.103	.003
-156	4.237	.030	.103	.003

-157	4.487	.030	.103	.003
-158	4.737	.030	.103	.003
-159	4.987	.035	.103	.003
-160	5.237	.035	.103	.003
-161	5.487	.035	.103	.003

-162	5.737	.035	.103	.003
-163	5.987	.035	.103	.003
-164	6.237	.040	.103	.003
-165	6.487	.040	.103	.003
-166	6.737	.040	.103	.003

-167	6.987	.040	.103	.003
-168	7.237	.045	.103	.003
-169	7.487	.045	.103	.003
-170	7.737	.045	.103	.003
-171	7.987	.045	.103	.003

-172	8.237	.050	.103	.003
-173	8.487	.050	.103	.003
-174	8.737	.050	.103	.003
-175	8.987	.050	.103	.003
-176	9.237	.055	.103	.003
-177	9.487	.055	.103	.003
-178	9.737	.055	.103	.003
Dash Number	I.D. (Inches)	Tol. +/-	C.S. (Inches)	Tol. +/-
-201	.171	.005	.139	.004
-202	.234	.005	.139	.004
-203	.296	.005	.139	.004
-204	.359	.005	.139	.004
-205	.421	.005	.139	.004

-206	.484	.005	.139	.004
-207	.546	.007	.139	.004
-208	.609	.009	.139	.004
-209	.671	.009	.139	.004
-210	.734	.010	.139	.004
-211	.796	.010	.139	.004

-212	.859	.010	.139	.004
-213	.921	.010	.139	.004
-214	.984	.010	.139	.004
-215	1.046	.010	.139	.004
-216	1.109	.012	.139	.004

-217	1.171	.012	.139	.004
-218	1.234	.012	.139	.004
-219	1.296	.012	.139	.004
-220	1.359	.012	.139	.004
-221	1.421	.012	.139	.004

-222	1.484	.015	.139	.004
-223	1.609	.015	.139	.004
-224	1.734	.015	.139	.004
-225	1.859	.018	.139	.004
-226	1.984	.018	.139	.004

-227	2.109	.018	.139	.004
-228	2.234	.020	.139	.004
-229	2.359	.020	.139	.004
-230	2.484	.020	.139	.004
-231	2.609	.020	.139	.004

-232	2.734	.024	.139	.004
-233	2.859	.024	.139	.004
-234	2.984	.024	.139	.004
-235	3.109	.024	.139	.004
-236	3.234	.024	.139	.004

-237	3.359	.024	.139	.004
-238	3.484	.024	.139	.004
-239	3.609	.024	.139	.004
-240	3.734	.028	.139	.004
-241	3.859	.028	.139	.004

-242	3.984	.028	.139	.004
-243	4.109	.028	.139	.004
-244	4.234	.030	.139	.004
-245	4.359	.030	.139	.004
-246	4.484	.030	.139	.004

-247	4.609	.030	.139	.004
-248	4.734	.030	.139	.004
-249	4.859	.035	.139	.004
-250	4.984	.035	.139	.004
-251	5.109	.035	.139	.004

-252	5.234	.035	.139	.004
-253	5.359	.035	.139	.004
-254	5.484	.035	.139	.004
-255	5.609	.035	.139	.004
-256	5.734	.035	.139	.004

-257	5.859	.035	.139	.004
-258	5.984	.035	.139	.004
-259	6.234	.040	.139	.004
-260	6.484	.040	.139	.004
-261	6.734	.040	.139	.004

-262	6.984	.040	.139	.004
-263	7.234	.045	.139	.004
-264	7.484	.045	.139	.004
-265	7.734	.045	.139	.004
-266	7.984	.045	.139	.004

-267	8.234	.050	.139	.004
-268	8.484	.050	.139	.004
-269	8.734	.050	.139	.004
-270	8.984	.050	.139	.004
-271	9.234	.055	.139	.004

-272	9.484	.055	.139	.004
-273	9.734	.055	.139	.004
-274	9.984	.055	.139	.004
-275	10.484	.055	.139	.004
-276	10.984	.065	.139	.004

-277	11.484	.065	.139	.004
-278	11.984	.065	.139	.004
-279	12.984	.065	.139	.004
-280	13.984	.065	.139	.004
-281	14.984	.065	.139	.004

-282	15.955	.075	.139	.004
-283	16.955	.080	.139	.004
-284	17.955	.085	.139	.004
Dash Number	I.D. (Inches)	Tol. +/-	C.S. (Inches)	Tol. +/-
-309	.412	.005	.210	.005
-310	.475	.005	.210	.005
-311	.537	.007	.210	.005
-312	.600	.009	.210	.005
-313	.662	.009	.210	.005

-314	.725	.010	.210	.005
-315	.787	.010	.210	.005
-316	.850	.010	.210	.005
-317	.912	.010	.210	.005
-318	.975	.010	.210	.005

-319	1.034	.010	.210	.005
-320	1.100	.012	.210	.005
-321	1.162	.012	.210	.005
-322	1.225	.012	.210	.005
-323	1.287	.012	.210	.005

-324	1.350	.012	.210	.005
-325	1.475	.015	.210	.005
-326	1.600	.015	.210	.005
-327	1.725	.015	.210	.005
-328	1.850	.015	.210	.005

-329	1.975	.018	.210	.005
-330	2.100	.018	.210	.005
-331	2.225	.018	.210	.005
-332	2.350	.018	.210	.005
-333	2.475	.020	.210	.005

-334	2.600	.020	.210	.005
-335	2.725	.020	.210	.005
-336	2.850	.020	.210	.005
-337	2.975	.024	.210	.005
-338	3.100	.024	.210	.005

-339	3.225	.024	.210	.005
-340	3.350	.024	.210	.005
-341	3.475	.024	.210	.005
-342	3.600	.028	.210	.005
-343	3.725	.028	.210	.005

-344	3.850	.028	.210	.005
-345	3.975	.028	.210	.005
-346	4.100	.028	.210	.005
-347	4.225	.030	.210	.005
-348	4.350	.030	.210	.005

-349	4.475	.030	.210	.005
-350	4.600	.030	.210	.005
-351	4.725	.030	.210	.005
-352	4.850	.030	.210	.005
-353	4.975	.037	.210	.005

-354	5.100	.037	.210	.005
-355	5.225	.037	.210	.005
-356	5.350	.037	.210	.005
-357	5.475	.037	.210	.005
-358	5.600	.037	.210	.005

-359	5.725	.037	.210	.005
-360	5.850	.037	.210	.005
-361	5.975	.037	.210	.005
-362	6.225	.040	.210	.005
-363	6.475	.040	.210	.005

-364	6.725	.040	.210	.005
-365	6.975	.040	.210	.005
-366	7.225	.045	.210	.005
-367	7.475	.045	.210	.005
-368	7.725	.045	.210	.005
-369	7.975	.045	.210	.005

-370	8.225	.050	.210	.005
-371	8.475	.050	.210	.005
-372	8.725	.050	.210	.005
-373	8.975	.050	.210	.005
-374	9.225	.055	.210	.005
-375	9.475	.055	.210	.005

-376	9.725	.055	.210	.005
-377	9.975	.055	.210	.005
-378	10.475	.060	.210	.005
-379	10.975	.060	.210	.005
-380	11.475	.065	.210	.005

-381	11.975	.065	.210	.005
-382	12.975	.065	.210	.005
-383	13.975	.070	.210	.005
-384	14.975	.070	.210	.005
-385	15.955	.075	.210	.005

-386	16.955	.075	.210	.005
-387	17.955	.085	.210	.005
-388	18.955	.090	.210	.005
-389	19.955	.095	.210	.005
-390	20.955	.095	.210	.005
Dash Number	I.D. (Inches)	Tol. +/-	C.S. (Inches)	Tol. +/-
-425	4.475	.033	.275	.006
-426	4.600	.033	.275	.006
-427	4.725	.033	.275	.006
-428	4.850	.033	.275	.006
-429	4.975	.037	.275	.006

-430	5.100	.037	.275	.006
-431	5.225	.037	.275	.006
-432	5.350	.037	.275	.006
-433	5.475	.037	.275	.006
-434	5.600	.037	.275	.006
-435	5.725	.037	.275	.006

-436	5.850	.037	.275	.006
-437	5.975	.037	.275	.006
-438	6.225	.040	.275	.006
-439	6.475	.040	.275	.006
-440	6.725	.040	.275	.006

-441	6.975	.040	.275	.006
-442	7.225	.045	.275	.006
-443	7.475	.045	.275	.006
-444	7.725	.045	.275	.006
-445	7.975	.045	.275	.006
-446	8.475	.055	.275	.006

-447	8.975	.055	.275	.006
-448	9.475	.055	.275	.006
-449	9.975	.055	.275	.006
-450	10.475	.060	.275	.006
-451	10.975	.060	.275	.006

-452	11.475	.060	.275	.006
-453	11.975	.060	.275	.006
-454	12.475	.060	.275	.006
-455	12.975	.060	.275	.006
-456	13.475	.070	.275	.006
-457	13.975	.070	.275	.006

-458	14.475	.070	.275	.006
-459	14.975	.070	.275	.006
-460	15.475	.070	.275	.006
-461	15.955	.075	.275	.006
-462	16.455	.075	.275	.006
-463	16.955	.08	.275	.006

-464	17.455	.085	.275	.006
-465	17.955	.085	.275	.006
-466	18.455	.085	.275	.006
-467	18.955	.090	.275	.006
Dash Number	I.D. (Inches)	Tol. +/-	C.S. (Inches)	Tol. +/-
-901	.185	.005	.056	.003
-902	.239	.005	.064	.003
-903	.301	.005	.064	.003
-904	.351	.005	.072	.003
-905	.414	.005	.072	.003

-906	.468	.005	.078	.003
-907	.530	.007	.082	.003
-908	.644	.009	.087	.003
-909	.706	.009	.097	.003
-910	.755	.009	.097	.003
-911	.863	.009	.116	.004

-912	.924	.009	.116	.004
-913	.986	.010	.116	.004
-914	1.047	.010	.116	.004
-916	1.171	.010	.116	.004
-918	1.355	.012	.116	.004
-920	1.475	.014	.118	.004

-924	1.720	.014	.118	.004
-928	2.090	.018	.118	.004
-932	2.337	.018	.118	.004


	Compound Profiles
	Technical Reports
	Chemical Compatability
	Size Chart
	Compound Cross Ref.
	ASTM Specifications
	Shelf Life per ARP 5316