Cooler Coupling and Olive.
Spare part for the keg system.
Regulator Washer – Tesuco R.30
-Suits Tesuco Regulator
-Used for sealing CO2 regulators
to a bottle?
These are a universal O-rings that fit the dip tubes of both the ball-lock and pin-lock soda kegs.
Dimensions: inside diameter is 5/16″, width is .103″