Dynamic Radial Gland Design, Dynamic Radial Glands, Gland Type Dynamic Radial

AS# 006-
014
AS# 015-
020
AS# 106-
111
AS# 112
125
AS# 202-
315
AS# 316-
349
AS# 425-
460

AS568 -006 through -014 Dynamic Radial Seal Design Guidelines
AS568 DASH	A	B	C	D	E	F	G
AS568 DASH	BORE DIA. +.001 -.000	PISTON DIA. +.001 -.000	PISTON GLAND DIA. +.001 -.000	ROD BORE DIA. +.001 -.001	ROD DIA. +.001 -.000	GLAND DIA. +.001 -.000	GLAND WIDTH +.010 -.000
-6	0.23	0.228	0.12	0.123	0.12	0.23	0.1
-7	0.262	0.26	0.151	0.154	0.151	0.262	0.1
-8	0.294	0.292	0.182	0.185	0.182	0.294	0.1
-9	0.326	0.324	0.214	0.217	0.214	0.326	0.1
-10	0.358	0.356	0.245	0.248	0.245	0.358	0.1
-11	0.421	0.419	0.307	0.31	0.307	0.421	0.1
-12	0.484	0.482	0.37	0.373	0.37	0.484	0.1
-13	0.546	0.544	0.432	0.435	0.432	0.546	0.1
-14	0.609	0.607	0.495	0.498	0.495	0.609	0.1

AS568 -015 through -020 Dynamic Radial Seal Design Guidelines
AS568 DASH	A	B	C	D	E	F	G
AS568 DASH	BORE DIA. +.002 -.000	PISTON DIA. +.001 -.000	PISTON GLAND DIA. +.002 -.000	ROD BORE DIA. +.002 -.000	ROD DIA. +.002 -.000	GLAND DIA. +.002 -.000	GLAND WIDTH +.010 -.000
-15	0.672	0.67	0.559	0.562	0.559	0.672	0.1
-16	0.736	0.734	0.624	0.627	0.624	0.736	0.1
-17	0.798	0.796	0.686	0.689	0.686	0.798	0.1
-18	0.862	0.86	0.749	0.752	0.749	0.862	0.1
-19	0.925	0.923	0.812	0.815	0.812	0.925	0.1
-20	0.988	0.986	0.875	0.878	0.875	0.988	0.1

AS568 -106 through -111 Dynamic Radial Seal Design Guidelines
AS568 DASH	A	B	C	D	E	F	G
AS568 DASH	BORE DIA. +.002 -.000	PISTON DIA. +.002 -.000	PISTON GLAND DIA. +.002 -.000	ROD BORE DIA. +.002 -.000	ROD DIA. +.002 -.000	GLAND DIA. +.002 -.000	GLAND WIDTH +.010 -.000
-106	0.351	0.348	0.18	0.184	0.18	0.351	0.135
-107	0.384	0.381	0.212	0.216	0.212	0.384	0.135
-108	0.415	0.412	0.243	0.247	0.243	0.415	0.135
-109	0.479	0.476	0.305	0.309	0.305	0.479	0.135
-110	0.542	0.539	0.368	0.372	0.368	0.542	0.135
-111	0.605	0.602	0.43	0.434	0.43	0.605	0.135

AS568 -112 through -125 Dynamic Radial Seal Design Guidelines
AS568 DASH	A	B	C	D	E	F	G
AS568 DASH	BORE DIA. +.002 -.000	PISTON DIA. +.001 -.000	PISTON GLAND DIA. +.002 -.000	ROD BORE DIA. +.002 -.000	ROD DIA. +.002 -.000	GLAND DIA. +.002 -.000	GLAND WIDTH +.010 -.000
-112	0.668	0.665	0.493	0.497	0.493	0.668	0.135
-113	0.732	0.729	0.557	0.561	0.557	0.732	0.135
-114	0.796	0.793	0.622	0.626	0.622	0.796	0.135
-115	0.859	0.856	0.684	0.688	0.684	0.859	0.135
-116	0.922	0.919	0.747	0.751	0.747	0.922	0.135
-117	0.986	0.983	0.811	0.815	0.811	0.986	0.135
-118	1.049	1.046	0.874	0.878	0.874	1.049	0.135
-119	1.11	1.107	0.936	0.94	0.936	1.11	0.135
-120	1.174	1.171	0.999	1.003	0.999	1.174	0.135
-121	1.236	1.233	1.061	1.065	1.061	1.236	0.135
-122	1.299	1.296	1.124	1.128	1.124	1.299	0.135
-123	1.363	1.36	1.188	1.192	1.188	1.363	0.135
-124	1.426	1.423	1.251	1.255	1.251	1.426	0.135
-125	1.489	1.486	1.314	1.318	1.314	1.489	0.135

AS568 -202 through -315 Dynamic Radial Seal Design Guidelines
AS568 DASH	A	B	C	D	E	F	G
AS568 DASH	BORE DIA. +.002 -.000	PISTON DIA. +.002 -.000	PISTON GLAND DIA. +.002 -.000	ROD BORE DIA. +.002 -.000	ROD DIA. +.002 -.000	GLAND DIA. +.002 -.000	GLAND WIDTH +.010 -.000
-202	0.478	0.474	0.24	0.244	0.24	0.478	0.175
-203	0.541	0.537	0.302	0.306	0.302	0.541	0.175
-204	0.605	0.601	0.365	0.369	0.365	0.605	0.175
-205	0.668	0.664	0.427	0.431	0.427	0.668	0.175
-206	0.732	0.728	0.49	0.494	0.49	0.732	0.175
-207	0.795	0.791	0.554	0.558	0.554	0.795	0.175
-208	0.859	0.855	0.619	0.623	0.619	0.859	0.175
-209	0.922	0.918	0.681	0.685	0.681	0.922	0.175
-210	0.986	0.982	0.745	0.749	0.745	0.986	0.175
-211	1.049	1.045	0.808	0.812	0.808	1.049	0.175
-212	1.112	1.108	0.871	0.875	0.871	1.112	0.175
-213	1.175	1.171	0.933	0.937	0.933	1.175	0.175
-214	1.238	1.234	0.996	1	0.996	1.238	0.175
-215	1.299	1.295	1.058	1.062	1.058	1.299	0.175
-216	1.365	1.361	1.123	1.127	1.123	1.365	0.175
-217	1.427	1.423	1.185	1.189	1.185	1.427	0.175
-218	1.489	1.485	1.248	1.252	1.248	1.489	0.175
-219	1.552	1.548	1.311	1.315	1.311	1.552	0.175
-220	1.616	1.612	1.374	1.378	1.374	1.616	0.175
-221	1.678	1.674	1.436	1.44	1.436	1.678	0.175
-222	1.744	1.74	1.502	1.506	1.502	1.744	0.175
-223	1.868	1.864	1.627	1.631	1.627	1.868	0.175
-224	1.994	1.99	1.752	1.756	1.752	1.994	0.175
-225	2.122	2.118	1.881	1.885	1.881	2.122	0.175
-309	0.789	0.784	0.418	0.423	0.418	0.789	0.25
-310	0.853	0.848	0.481	0.486	0.481	0.853	0.25
-311	0.916	0.911	0.545	0.55	0.545	0.916	0.25
-312	0.981	0.976	0.61	0.615	0.61	0.981	0.25
-313	1.044	1.039	0.672	0.677	0.672	1.044	0.25
-314	1.108	1.103	0.736	0.741	0.736	1.108	0.25
-315	1.17	1.165	0.799	0.804	0.799	1.17	0.25

AS568 -316 through -349 Dynamic Radial Seal Design Guidelines
AS568 DASH	A	B	C	D	E	F	G
AS568 DASH	BORE DIA. +.002 -.000	PISTON DIA. +.002 -.000	PISTON GLAND DIA. +.002 -.000	ROD BORE DIA. +.002 -.000	ROD DIA. +.002 -.000	GLAND DIA. +.002 -.000	GLAND WIDTH +.010 -.000
-316	1.234	1.229	0.862	0.867	0.862	1.234	0.25
-317	1.295	1.29	0.924	0.929	0.924	1.295	0.25
-318	1.359	1.354	0.987	0.992	0.987	1.359	0.25
-319	1.42	1.415	1.049	1.054	1.049	1.42	0.25
-320	1.485	1.48	1.114	1.119	1.114	1.485	0.25
-321	1.548	1.543	1.176	1.181	1.176	1.548	0.25
-322	1.61	1.605	1.239	1.244	1.239	1.61	0.25
-323	1.673	1.668	1.302	1.307	1.302	1.673	0.25
-324	1.737	1.732	1.365	1.37	1.365	1.737	0.25
-325	1.865	1.86	1.493	1.498	1.493	1.865	0.25
-326	1.99	1.985	1.618	1.623	1.618	1.99	0.25
-327	2.114	2.109	1.743	1.748	1.743	2.114	0.25
-328	2.24	2.235	1.869	1.874	1.869	2.24	0.25
-329	2.369	2.364	1.997	2.002	1.997	2.369	0.25
-330	2.493	2.488	2.122	2.127	2.122	2.493	0.25
-331	2.618	2.613	2.247	2.252	2.247	2.618	0.25
-332	2.745	2.74	2.373	2.378	2.373	2.745	0.25
-333	2.871	2.866	2.5	2.505	2.5	2.871	0.25
-334	2.997	2.992	2.625	2.63	2.625	2.997	0.25
-335	3.121	3.116	2.75	2.755	2.75	3.121	0.25
-336	3.247	3.242	2.876	2.881	2.876	3.247	0.25
-337	3.376	3.371	3.005	3.01	3.005	3.376	0.25
-338	3.502	3.497	3.13	3.135	3.13	3.502	0.25
-339	3.626	3.621	3.255	3.26	3.255	3.626	0.25
-340	3.752	3.747	3.381	3.386	3.381	3.752	0.25
-341	3.877	3.872	3.506	3.511	3.506	3.877	0.25
-342	4.007	4.002	3.635	3.64	3.635	4.007	0.25
-343	4.133	4.128	3.761	3.766	3.761	4.133	0.25
-344	4.257	4.252	3.886	3.891	3.886	4.257	0.25
-345	4.382	4.377	4.011	4.016	4.011	4.382	0.25
-346	4.507	4.502	4.136	4.141	4.136	4.507	0.25
-347	4.635	4.63	4.264	4.269	4.264	4.635	0.25
-348	4.76	4.755	4.389	4.394	4.389	4.76	0.25
-349	4.885	4.88	4.514	4.519	4.514	4.885	0.25

AS568 -425 through -460 Dynamic Radial Seal Design Guidelines
AS568 DASH	A	B	C	D	E	F	G
AS568 DASH	BORE DIA. +.002 -.000	PISTON DIA. +.002 -.000	PISTON GLAND DIA. +.002 -.000	ROD BORE DIA. +.002 -.000	ROD DIA. +.002 -.000	GLAND DIA. +.002 -.000	GLAND WIDTH +.010 -.000
-425	5.009	5.002	4.517	4.523	4.517	5.008	0.32
-426	5.134	5.127	4.642	4.648	4.642	5.133	0.32
-427	5.26	5.253	4.768	4.774	4.768	5.259	0.32
-428	5.385	5.378	4.893	4.899	4.893	5.384	0.32
-429	5.514	5.507	5.022	5.028	5.022	5.513	0.32
-430	5.639	5.632	5.147	5.153	5.147	5.638	0.32
-431	5.765	5.758	5.273	5.279	5.273	5.764	0.32
-434	6.14	6.133	5.648	5.654	5.644	6.139	0.32
-435	6.266	6.259	5.774	5.78	5.774	6.265	0.32
-436	6.391	6.384	5.899	5.905	5.899	6.39	0.32
-437	6.516	6.509	6.024	6.03	6.024	6.515	0.32
-438	6.77	6.763	6.278	6.284	6.278	6.769	0.32
-439	7.02	7.013	6.528	6.534	6.528	7.019	0.32
-440	7.271	7.264	6.779	6.785	6.779	7.27	0.32
-441	7.521	7.514	7.029	7.035	7.029	7.52	0.32
-442	7.777	7.77	7.285	7.291	7.285	7.776	0.32
-443	8.027	8.02	7.535	7.541	7.535	8.026	0.32
-444	8.278	8.271	7.786	7.792	7.786	8.277	0.32
-445	8.528	8.521	8.036	8.042	8.036	8.527	0.32
-446	9.039	9.032	8.547	8.553	8.547	9.038	0.32
-447	9.54	9.533	9.048	9.054	9.048	9.539	0.32
-448	10.041	10.034	9.549	9.555	9.549	10.04	0.32
-449	10.542	10.535	10.05	10.056	10.05	10.541	0.32
-450	11.048	11.041	10.556	10.562	10.556	11.047	0.32
-451	11.549	11.542	11.057	11.063	11.057	11.548	0.32
-452	12.05	12.043	11.558	11.564	11.558	12.049	0.32
-453	12.551	12.545	12.059	12.065	12.059	12.55	0.32
-454	13.052	13.045	12.56	12.566	12.56	13.051	0.32
-455	13.553	13.546	13.061	13.067	13.061	13.552	0.32
-456	14.064	14.057	13.572	13.578	13.572	14.063	0.32
-457	14.565	14.558	14.073	14.079	14.073	14.564	0.32
-458	15.066	15.059	14.574	14.58	14.574	15.065	0.32
-459	15.567	15.56	15.075	15.081	15.075	15.566	0.32
-460	16.068	16.061	15.576	15.582	15.576	16.067	0.32

Dynamic Radial O-Ring Gland Design

In dynamic radial o-ring applications the o-ring is squeezed radially and subjected to reciprocating motion either intermittent or continuous. Thus o-rings used in these types of applications are subjected to friction between the parts of the gland. The table below lists recommended dimensions for Dynamic Radial o-ring glands by AS-568A o-ring dash numbers.

Static Radial Glands

Axial Internal Pressure

Axial External Pressure

Dynamic Rotary Glands

Dynamic Reciprocating

Static Crush Glands

Dovetail Glands

Gland Design Home

Dynamic Radial Gland Design

O-rings and seals in dynamic radial applications should consider the following; temperatures, motion or vibration, squeeze, stretch, friction and types of friction. Columbia Engineered Rubber Inc, provides the basic o-ring gland design for theses applications. See table below. There are a number of factors that should be carefully considered when designing the gland for a dynamic o-ring seal. The chart below provides a standard set of guidelines to assist you in your design.

The elastomer selection should directly correlate with the type of application in which the o-ring seal will be used. You can review our materials/elastomer section to examine the primary qualities of the material type under consideration.

Due to the number of interacting forces, it is STRONGLY RECOMMENDED THAT YOUR ELASTOMER SELECTION BE RIGOROUSLY TESTED IN THE ACTUAL APPLICATION, performance assumptions must be checked so that you are certain that all variables have been carefully considered.

Dynamic Radial Glands