The Bodok seal is a specialised washer that ensures a gas-tight seal between the cylinder yoke or regulator of any medical device requiring a gas supply, and a gas cylinder

The Bodok seal consists of a neoprene washer with a peripheral metal reinforcing ring which prevents splaying of the washer

The seal is incombustible and resistant to the high pressures imposed upon it by cylinder gases (a full cylinder has a pressure of approx 2000 psi / 140 bar)