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Sealing documentation over groove specification?

Joel_Lapointe

Mechanical
Dec 13, 2023
20
Hi,
We currently have a x-ring (quadring) seal that leaks. The application is an automotive actuator for offroad vehicles (ATVs...). As it is a x-ring (quadring), design documentation is more sparse than for o'rings. I try to get justification over dimensional tolerances on grooves for those seals. I've found the Eriks handbook on quadrings for general design. However I don't find more details about tolerance explainations. There isn't mush more. Is there some standards on these especially about groove tolerancing to ensure leakproofing? Especially the cylindricity as we have doubts about the ovality of our PBT-30GF plastic part.
Thank you.
 

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