Roger is Roger Tyson, the owner of 928sRus located in Double Oak, Texas. You can email him or Google him and call him. He is a wealth of knowledge and a heckuva nice guy. I gave you his email. Substitute in the @ for "at".
I try not to steer business away from this site since it IS technically a competitor for Pelican and they actually do own and fund this site, but I don't think they will mind that you get the correct O ring.
