Rod & Piston (Dynamic) Design Guide

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

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

* 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.

Canyon Components O-Ring Dynamic Rod and Piston Groove Design Guide with specifications for dimensions, tolerances, and sealing using Kalrez®, Canrez®, Chemraz®, and Parker® O-rings.

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O-Ring Size Charts

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Dynamic rod and piston O-ring design reference from Canyon Components for AS568 standard and custom Kalrez®, Canrez®, Chemraz®, and Parker® O-rings in motion sealing applications.

Engineering guide from Canyon Components for designing dynamic rod and piston O-ring grooves to ensure sealing performance with Kalrez®, Canrez®, Chemraz®, and Parker® O-rings.

Surface Finishes are RMS Values

DASH # RANGE	O-RING CROSS SECTION	GLAND DEPTH (D)	SQUEEZE		GLAND WIDTH (W)	GLAND CORNER RADIUS
AS568	Nominal (in)	Nominal (in)	Actual (in)	Percent	Nominal (in)	R1 (in)	R2 (in)
-006 through -012	0.070 ± 0.003	0.055 - 0.057	0.010 - 0.018	15 - 25	0.093 - 0.098	0.01	0.005
-104 through -116	0.103 ± 0.003	0.088 - 0.090	0.010 - 0.018	10 - 17	0.140 - 0.145	0.01	0.005
-201 through -222	0.139 ± 0.004	0.121 - 0.123	0.012 - 0.022	9 - 16	0.187 - 0.192	0.018	0.005
-309 through -349	0.210 ± 0.005	0.185 - 0.188	0.017 - 0.030	8 - 14	0.281 - 0.286	0.028	0.005
-425 through -460	0.275 ± 0.006	0.237 - 0.240	0.029 - 0.044	11 - 16	0.375 - 0.380	0.028	0.005

Dynamic Seal Form

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Technical resource from Canyon Components covering tolerances and groove dimensions for Kalrez®, Canrez®, Chemraz®, and Parker® O-rings in dynamic rod and piston sealing systems.

Groove Design References

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Custom Parts & Custom O-rings

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Dynamic Seal Design Variables

When designing a dynamic seal, it's important to take all relevant applicational variables into account. We have listed the most important ones below for your reference.

Canyon Components strives to meet all customer service requests. Feel free to contact Canyon Components engineering and let our knowledgeable staff help you design the perfect part for your needs.

Is this a new or existing application? If it's existing, is the current seal failing in application?
What quantity would you like for us to quote?
What is the expected yearly usage for this seal?
What are the maximum and minimum temperatures that the seal will experience in use?
What pressures will the seal experience in use?
What chemicals and media will be making contact with the seal during use?
Is the sealing assembly used in a dynamic or static application? If dynamic, what type? (Rotary, translational, or both)
If dynamic, what is the speed of movement or rotation?
What groove type is the seal being used in? (Rod, piston, or face)
What are the relevant dimensions for the groove assembly?
Groove Width (W)
Groove ID (A)
Groove OD (B)
Groove Depth (C)

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Durable SES solutions from Canyon Components optimize sealing performance in rotary, reciprocating, and oscillating motion systems.

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