O-Ring Rod Seal Groove Calculator
Check a static or reciprocating rod seal groove for any AS568, JIS, metric or custom O-ring
In a rod seal, the O-ring sits in a groove in the housing bore and seals against the rod. Use this calculator to check a static or reciprocating rod seal groove for any AS568, JIS, metric or custom O-ring size.
* 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.
What this calculator checks
Choose an O-ring by size standard and size code, select static or dynamic (reciprocating), and enter the rod diameter, groove diameter, groove width and bore diameter. The calculator returns groove depth, clearance, stretch, interference, compression ratio and gland fill, with our recommended range beside each result.
How to read the results
Compression ratio is how much the O-ring cross section is squeezed between the rod and the groove. Gland fill is how much of the groove the O-ring takes up; leave room for swell and thermal expansion. Clearance is the gap the O-ring could extrude into under pressure. Moving seals use lighter compression than static seals to limit friction and wear, so the recommended ranges change when you switch between static and dynamic.
Before you finalize a design
Check the result against the matching design guide, and ask us if the rod moves fast, the pressure is high, or the fluid is aggressive. Those conditions can call for backup rings or a different compound.
Canyon Components O-Ring Groove Calculator for rod seals with AS568 standard and custom groove dimensions for Kalrez®, Canrez®, Chemraz®, and Parker® O-rings.
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Please consult a Canyon Components Engineer about your specific application and we will use our decades of experience to formulate a solution that fits your need.
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