O-Ring Grooves
Hi Guys,
I have a 12mm ID, 1mm thick O-ring I want to cut a groove for on a 14mm OD cylinder for air gun type applications.
As I’m a complete noob, I was hoping to get some pointers:
1. Is this even the right size o-ring for a 14mm OD piston in cylinder type seal?
2. Any ideas on what shape and how deep/wide to cut the grooves before I end up going through all my moneh and patience figuring it out?
Thanks a buuuuunch.

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i’d go 75% – 80% comrpession on the orings in this application. So 1mm dia o-ring means a groove 0.8mm deep. I’d give 1.2mm for the width.