FX Fill Probe O-Ring Size?

Yes, same as .22 caliber breech barrel O-ring. 11/32 in. OD x 7/32 in. ID x 1/16 in. wall thickness. If you're ordering get the Viton O-rings, they last longer...

Thank u much.

i know this is a really old post but you saved my ass today as I was unable to fill my new dreamtac due to the orings on the probe being nicked. I hit up ace hardware got 2 orings based on your size listed and I was back in business in a few minutes.

Thank You!

--HDMurex