Rod (Dynamic Rotary) Design Guide

'Rod' styled O-ring grooves are commonly used dynamic rotary O-ring sealing configurations. This page specifically concerns dynamic (moving) rotary Rod O-ring seals.

The purpose of the tables below are to serve as a design guide for dynamic rotary Rod O-ring grooves using AS568 O-ring sizes+.

Please see our General Groove Guide for more information, or feel free to get in touch with our engineers if you have any questions.

*Feet per minute = 0.26 X Shaft Diameter (inches) X rpm

**Total indicator reading between groove OD, shaft, and adjacent bearing surface

*** If clearance (extrusion gap) must be reduced for higher pressures, bearing length M must be no less than the minimum figures given. Clearances given are based on the use of 80 shore durometer minimum O-ring for 55.2 Bar (800 psi) max. See Figure 3-2 for recommended clearances when pressures exceed 55.2 Bar (800 psi).

**** The use of O-rings as high speed rotary shaft seals is usually not recommended for applications requiring lower than -40°C (-40°F) or higher than 121°C (250°F) operating temperatures.

***** The O-ring gland in a rotary shaft application should not be used as a bearing surface. The shaft should be contained by bearings that will permit the O-ring to operate under the lowest possible heat and load

+ Please note that some AS568-0XX O-rings have atypical cross sections. Please see our General Groove Guide for more information, or feel free to get in touch with our engineers if you have any questions about O-rings, gaskets, & custom molded parts.

'Rod' styled O-ring grooves are commonly used dynamic rotary O-ring sealing configurations. This page specifically concerns dynamic (moving) rotary Rod O-ring seals.

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Surface Finishes are RMS Values

DASH # RANGE	O-RING CROSS SECTION	MAX ROTATIONAL SPEED *	GLAND DEPTH (D)	SQUEEZE	GLAND WIDTH (W)	CLEARANCE *** (H)	MAX ECCENTRICITY **	BEARING LENGTH MIN *** (Z)	GLAND CORNER RADIUS
AS568	Nominal (in)	Feet Per Min (FPM)	Nominal (in)	Percent	Nominal (in)	Nominal (in)	Nominal (in)	Nominal (in)	R1 (in)	R2 (in)
-004 through -045	0.070 ± 0.003	200 - 1500	0.065 - 0.067	0 - 11	0.075 - 0.079	0.012 - 0.016	0.002	0.7	0.01	0.005
-102 through -163	0.103 ± 0.003	200 - 600	0.097 - 0.099	1 - 8.5	0.108 - 0.112	0.012 - 0.016	0.002	1.03	0.01	0.005
-201 through -258	0.139 ± 0.004	200 - 400	0.133 - 0.135	0 - 7	0.144 - 0.148	0.016 - 0.020	0.003	1.39	0.018	0.005

DASH #	O-RING CROSS SECTION (CS)	O-RING INSIDE DIAMETER (ID)	O-RING OUTSIDE DIAMETER (OD)	GLAND DIAMETER (E)	ROD DIAMETER (F)	BORE DIAMETER (G)
AS568	Nominal (in)	Nominal (in)	Nominal (in)	Nom (in) +.003 / -0	Nom (in) +0 / -0.001	Nom (in) +.003 / -0
-004	0.070 ± 0.003	0.070 ± 0.005	0.210	0.202	0.072	0.084
-005	0.070 ± 0.003	0.101 ± 0.005	0.241	0.233	0.103	0.115
-006	0.070 ± 0.003	0.114 ± 0.005	0.254	0.246	0.116	0.128
-007	0.070 ± 0.003	0.145 ± 0.005	0.285	0.277	0.147	0.159
-008	0.070 ± 0.003	0.176 ± 0.005	0.316	0.308	0.178	0.19
-009	0.070 ± 0.003	0.208 ± 0.005	0.348	0.34	0.21	0.222
-010	0.070 ± 0.003	0.239 ± 0.005	0.379	0.371	0.241	0.253
-011	0.070 ± 0.003	0.301 ± 0.005	0.441	0.433	0.303	0.315
-012	0.070 ± 0.003	0.364 ± 0.005	0.504	0.496	0.366	0.378
-013	0.070 ± 0.003	0.426 ± 0.005	0.566	0.558	0.428	0.44
-014	0.070 ± 0.003	0.489 ± 0.005	0.629	0.621	0.491	0.503
-015	0.070 ± 0.003	0.551 ± 0.007	0.691	0.683	0.553	0.565
-016	0.070 ± 0.003	0.614 ± 0.009	0.754	0.746	0.616	0.628
-017	0.070 ± 0.003	0.676 ± 0.009	0.816	0.808	0.678	0.693
-018	0.070 ± 0.003	0.739 ± 0.009	0.879	0.871	0.741	0.753
-019	0.070 ± 0.003	0.801 ± 0.009	0.941	0.933	0.803	0.815
-020	0.070 ± 0.003	0.864 ± 0.009	1.004	0.996	0.866	0.878
-021	0.070 ± 0.003	0.926 ± 0.009	1.066	1.058	0.928	0.94
-022	0.070 ± 0.003	0.989 ± 0.01	1.129	1.121	0.991	1.003
-023	0.070 ± 0.003	1.051 ± 0.01	1.191	1.183	1.053	1.065
-024	0.070 ± 0.003	1.114 ± 0.01	1.254	1.246	1.116	1.128
-025	0.070 ± 0.003	1.176 ± 0.011	1.316	1.308	1.178	1.19
-026	0.070 ± 0.003	1.239 ± 0.011	1.379	1.371	1.241	1.253
-027	0.070 ± 0.003	1.301 ± 0.011	1.441	1.433	1.303	1.315
-028	0.070 ± 0.003	1.364 ± 0.013	1.504	1.496	1.366	1.378
-029	0.070 ± 0.003	1.489 ± 0.013	1.629	1.621	1.491	1.503
-030	0.070 ± 0.003	1.614 ± 0.013	1.754	1.746	1.616	1.628
-031	0.070 ± 0.003	1.739 ± 0.015	1.879	1.871	1.741	1.753
-032	0.070 ± 0.003	1.864 ± 0.015	2.004	1.996	1.866	1.878
-033	0.070 ± 0.003	1.989 ± 0.018	2.129	2.121	1.991	2.003
-034	0.070 ± 0.003	2.114 ± 0.018	2.254	2.246	2.116	2.128
-035	0.070 ± 0.003	2.239 ± 0.018	2.379	2.371	2.241	2.253
-036	0.070 ± 0.003	2.364 ± 0.018	2.504	2.496	2.366	2.378
-037	0.070 ± 0.003	2.489 ± 0.018	2.629	2.621	2.491	2.503
-038	0.070 ± 0.003	2.614 ± 0.02	2.754	2.746	2.616	2.628
-039	0.070 ± 0.003	2.739 ± 0.02	2.879	2.871	2.741	2.753
-040	0.070 ± 0.003	2.864 ± 0.02	3.004	2.996	2.866	2.878
-041	0.070 ± 0.003	2.989 ± 0.024	3.129	3.121	2.991	3.003
-042	0.070 ± 0.003	3.239 ± 0.024	3.379	3.371	3.241	3.253
-043	0.070 ± 0.003	3.489 ± 0.024	3.629	3.621	3.491	3.503
-044	0.070 ± 0.003	3.739 ± 0.027	3.879	3.871	3.741	3.753
-045	0.070 ± 0.003	3.989 ± 0.027	4.129	4.121	3.991	4.003
-102	0.103 ± 0.003	0.049 ± 0.005	0.255	0.245	0.051	0.063
-103	0.103 ± 0.003	0.081 ± 0.005	0.287	0.277	0.083	0.095
-104	0.103 ± 0.003	0.112 ± 0.005	0.318	0.308	0.114	0.126
-105	0.103 ± 0.003	0.143 ± 0.005	0.349	0.339	0.145	0.157
-106	0.103 ± 0.003	0.174 ± 0.005	0.380	0.37	0.176	0.188
-107	0.103 ± 0.003	0.206 ± 0.005	0.412	0.402	0.208	0.22
-108	0.103 ± 0.003	0.237 ± 0.005	0.443	0.433	0.239	0.251
-109	0.103 ± 0.003	0.299 ± 0.005	0.505	0.495	0.301	0.313
-110	0.103 ± 0.003	0.362 ± 0.005	0.568	0.558	0.364	0.376
-111	0.103 ± 0.003	0.424 ± 0.005	0.630	0.62	0.426	0.438
-112	0.103 ± 0.003	0.487 ± 0.005	0.693	0.683	0.489	0.501
-113	0.103 ± 0.003	0.549 ± 0.007	0.755	0.745	0.551	0.563
-114	0.103 ± 0.003	0.612 ± 0.009	0.818	0.808	0.614	0.626
-115	0.103 ± 0.003	0.674 ± 0.009	0.880	0.87	0.676	0.688
-116	0.103 ± 0.003	0.737 ± 0.009	0.943	0.933	0.739	0.751
-117	0.103 ± 0.003	0.799 ± 0.01	1.005	0.995	0.801	0.813
-118	0.103 ± 0.003	0.862 ± 0.01	1.068	1.058	0.864	0.876
-119	0.103 ± 0.003	0.924 ± 0.01	1.130	1.12	0.926	0.938
-120	0.103 ± 0.003	0.987 ± 0.01	1.193	1.183	0.989	1.001
-121	0.103 ± 0.003	1.049 ± 0.01	1.255	1.245	1.051	1.063
-122	0.103 ± 0.003	1.112 ± 0.01	1.318	1.308	1.114	1.126
-123	0.103 ± 0.003	1.174 ± 0.012	1.380	1.37	1.176	1.188
-124	0.103 ± 0.003	1.237 ± 0.012	1.443	1.433	1.239	1.251
-125	0.103 ± 0.003	1.299 ± 0.012	1.505	1.495	1.301	1.313
-126	0.103 ± 0.003	1.362 ± 0.012	1.568	1.558	1.364	1.376
-127	0.103 ± 0.003	1.424 ± 0.012	1.630	1.62	1.426	1.438
-128	0.103 ± 0.003	1.487 ± 0.012	1.693	1.683	1.489	1.501
-129	0.103 ± 0.003	1.549 ± 0.015	1.755	1.745	1.551	1.563
-130	0.103 ± 0.003	1.612 ± 0.015	1.818	1.808	1.614	1.626
-131	0.103 ± 0.003	1.674 ± 0.015	1.880	1.87	1.676	1.688
-132	0.103 ± 0.003	1.737 ± 0.015	1.943	1.933	1.739	1.751
-133	0.103 ± 0.003	1.799 ± 0.015	2.005	1.995	1.801	1.813
-134	0.103 ± 0.003	1.862 ± 0.015	2.068	2.058	1.864	1.876
-135	0.103 ± 0.003	1.925 ± 0.017	2.131	2.121	1.927	1.939
-136	0.103 ± 0.003	1.987 ± 0.017	2.193	2.183	1.989	2.001
-137	0.103 ± 0.003	2.050 ± 0.017	2.256	2.246	2.052	2.064
-138	0.103 ± 0.003	2.112 ± 0.017	2.318	2.308	2.114	2.126
-139	0.103 ± 0.003	2.175 ± 0.017	2.381	2.371	2.177	2.189
-140	0.103 ± 0.003	2.237 ± 0.017	2.443	2.433	2.239	2.251
-141	0.103 ± 0.003	2.300 ± 0.02	2.506	2.496	2.302	2.314
-142	0.103 ± 0.003	2.362 ± 0.02	2.568	2.558	2.364	2.376
-143	0.103 ± 0.003	2.425 ± 0.02	2.631	2.621	2.427	2.439
-144	0.103 ± 0.003	2.487 ± 0.02	2.693	2.683	2.489	2.501
-145	0.103 ± 0.003	2.550 ± 0.02	2.756	2.746	2.552	2.564
-146	0.103 ± 0.003	2.612 ± 0.02	2.818	2.808	2.614	2.626
-147	0.103 ± 0.003	2.675 ± 0.022	2.881	2.871	2.677	2.689
-148	0.103 ± 0.003	2.737 ± 0.022	2.943	2.933	2.739	2.751
-149	0.103 ± 0.003	2.800 ± 0.022	3.006	2.996	2.802	2.814
-150	0.103 ± 0.003	2.862 ± 0.022	3.068	3.058	2.864	2.876
-151	0.103 ± 0.003	2.987 ± 0.024	3.193	3.183	2.989	3.001
-152	0.103 ± 0.003	3.237 ± 0.024	3.443	3.433	3.239	3.251
-153	0.103 ± 0.003	3.487 ± 0.024	3.693	3.683	3.489	3.501
-154	0.103 ± 0.003	3.737 ± 0.028	3.943	3.933	3.739	3.751
-155	0.103 ± 0.003	3.987 ± 0.028	4.193	4.183	3.989	4.001
-156	0.103 ± 0.003	4.237 ± 0.03	4.443	4.433	4.239	4.251
-157	0.103 ± 0.003	4.487 ± 0.03	4.693	4.683	4.489	4.501
-158	0.103 ± 0.003	4.737 ± 0.03	4.943	4.933	4.739	4.751
-159	0.103 ± 0.003	4.987 ± 0.035	5.193	5.183	4.989	5.001
-160	0.103 ± 0.003	5.237 ± 0.035	5.443	5.433	5.239	5.251
-161	0.103 ± 0.003	5.487 ± 0.035	5.693	5.683	5.489	5.501
-162	0.103 ± 0.003	5.737 ± 0.035	5.943	5.933	5.739	5.751
-163	0.103 ± 0.003	5.987 ± 0.035	6.193	6.183	5.989	6.001
-201	0.139 ± 0.004	0.171 ± 0.005	0.449	0.439	0.173	0.189
-202	0.139 ± 0.004	0.234 ± 0.005	0.512	0.502	0.236	0.252
-203	0.139 ± 0.004	0.296 ± 0.005	0.574	0.564	0.298	0.314
-204	0.139 ± 0.004	0.359 ± 0.005	0.637	0.627	0.361	0.377
-205	0.139 ± 0.004	0.421 ± 0.005	0.699	0.689	0.423	0.439
-206	0.139 ± 0.004	0.484 ± 0.005	0.762	0.752	0.486	0.502
-207	0.139 ± 0.004	0.546 ± 0.007	0.824	0.814	0.548	0.564
-208	0.139 ± 0.004	0.609 ± 0.009	0.887	0.877	0.611	0.627
-209	0.139 ± 0.004	0.671 ± 0.009	0.949	0.939	0.673	0.689
-210	0.139 ± 0.004	0.734 ± 0.01	1.012	1.002	0.736	0.752
-211	0.139 ± 0.004	0.796 ± 0.01	1.074	1.064	0.798	0.814
-212	0.139 ± 0.004	0.859 ± 0.01	1.137	1.127	0.861	0.877
-213	0.139 ± 0.004	0.921 ± 0.01	1.199	1.189	0.923	0.939
-214	0.139 ± 0.004	0.984 ± 0.01	1.262	1.252	0.986	1.002
-215	0.139 ± 0.004	1.046 ± 0.01	1.324	1.314	1.048	1.064
-216	0.139 ± 0.004	1.109 ± 0.012	1.387	1.377	1.111	1.127
-217	0.139 ± 0.004	1.171 ± 0.012	1.449	1.439	1.173	1.189
-218	0.139 ± 0.004	1.234 ± 0.012	1.512	1.502	1.236	1.252
-219	0.139 ± 0.004	1.296 ± 0.012	1.574	1.564	1.298	1.314
-220	0.139 ± 0.004	1.359 ± 0.012	1.637	1.627	1.361	1.377
-221	0.139 ± 0.004	1.421 ± 0.012	1.699	1.689	1.423	1.439
-222	0.139 ± 0.004	1.484 ± 0.015	1.762	1.752	1.486	1.502
-223	0.139 ± 0.004	1.609 ± 0.015	1.887	1.877	1.611	1.627
-224	0.139 ± 0.004	1.734 ± 0.015	2.012	2.002	1.736	1.752
-225	0.139 ± 0.004	1.859 ± 0.018	2.137	2.127	1.861	1.877
-226	0.139 ± 0.004	1.984 ± 0.018	2.262	2.252	1.986	2.002
-227	0.139 ± 0.004	2.109 ± 0.018	2.387	2.377	2.111	2.127
-228	0.139 ± 0.004	2.234 ± 0.02	2.512	2.502	2.236	2.252
-229	0.139 ± 0.004	2.359 ± 0.02	2.637	2.627	2.361	2.377
-230	0.139 ± 0.004	2.484 ± 0.02	2.762	2.752	2.486	2.502
-231	0.139 ± 0.004	2.609 ± 0.02	2.887	2.877	2.611	2.627
-232	0.139 ± 0.004	2.734 ± 0.024	3.012	3.002	2.736	2.752
-233	0.139 ± 0.004	2.859 ± 0.024	3.137	3.127	2.861	2.877
-234	0.139 ± 0.004	2.984 ± 0.024	3.262	3.252	2.986	3.002
-235	0.139 ± 0.004	3.109 ± 0.024	3.387	3.377	3.111	3.127
-236	0.139 ± 0.004	3.234 ± 0.024	3.512	3.502	3.236	3.252
-237	0.139 ± 0.004	3.359 ± 0.024	3.637	3.627	3.361	3.377
-238	0.139 ± 0.004	3.484 ± 0.024	3.762	3.752	3.486	3.502
-239	0.139 ± 0.004	3.609 ± 0.028	3.887	3.877	3.611	3.627
-240	0.139 ± 0.004	3.734 ± 0.028	4.012	4.002	3.736	3.752
-241	0.139 ± 0.004	3.859 ± 0.028	4.137	4.127	3.861	3.877
-242	0.139 ± 0.004	3.984 ± 0.028	4.262	4.252	3.986	4.002
-243	0.139 ± 0.004	4.109 ± 0.028	4.387	4.377	4.111	4.127
-244	0.139 ± 0.004	4.234 ± 0.03	4.512	4.502	4.236	4.252
-245	0.139 ± 0.004	4.359 ± 0.03	4.637	4.627	4.361	4.377
-246	0.139 ± 0.004	4.484 ± 0.03	4.762	4.752	4.486	4.502
-247	0.139 ± 0.004	4.609 ± 0.03	4.887	4.877	4.611	4.627
-248	0.139 ± 0.004	4.734 ± 0.03	5.012	5.002	4.736	4.752
-249	0.139 ± 0.004	4.859 ± 0.035	5.137	5.127	4.861	4.877
-250	0.139 ± 0.004	4.984 ± 0.035	5.262	5.252	4.986	5.002
-251	0.139 ± 0.004	5.109 ± 0.035	5.387	5.377	5.111	5.127
-252	0.139 ± 0.004	5.234 ± 0.035	5.512	5.502	5.236	5.252
-253	0.139 ± 0.004	5.359 ± 0.035	5.637	5.627	5.361	5.377
-254	0.139 ± 0.004	5.484 ± 0.035	5.762	5.752	5.486	5.502
-255	0.139 ± 0.004	5.609 ± 0.035	5.887	5.877	5.611	5.627
-256	0.139 ± 0.004	5.734 ± 0.035	6.012	6.002	5.736	5.752
-257	0.139 ± 0.004	5.859 ± 0.035	6.137	6.127	5.861	5.877
-258	0.139 ± 0.004	5.984 ± 0.035	6.262	6.252	5.986	6.002

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