For my one way bearing, i used a small spribg out of an oil seal from a car, it works, but the last one i had failed, and i would like to use an o-ring. Bt i cant find em anyware!! what stores are you guys finding large orings in? the ones at the auto parts stores are all way too fat.

 

mine only lasted for about 30 starts, I'm running 12:1 compression so that is probally too much for an o-ring. I just found one lying around at work, so not sure where to get one from, but try a plumbing supply or bearing supply they should have it.

 

Like in the other post, There is enough room to use 2 of these o-rings so that is what I am doing. It has worked excellent. Go on Raptortranny.com and print off the dimensions of the o-ring and take it to the local hardware or bearing store. Just remember the inner diameter can be just a little smaller but not to much.