Silicone offers a wide temperature operating range while maintaining flexibility.  Ideal for high temperature locations such as where a connection will exist in the heat wash of a burner.  Softer than the PTFE Teflon Tri Clover Compatible gasket, this silicone tri clover gasket is is easier to keep a drip free seal across a wider temperature range.  If your application requires the roatation of the two parts, use the Teflon gasket. Does NOT work against a keg ferrule, use a silicone O-ring or shave the ridge off one side of this gasket.

EPDM brewery gaskets have a narrower temperature range than silicone (-30ºF to 300ºF) but stand up to stronger acids and caustics than silicone making them more desirable in commercial applications and excellent for home brewery applications.  EPDM brewery gaskets are relatively soft, easy to seal and probably the best all around choice for any application that doesn't need to live close to a flame source. EPDM brewery gaskets are black.

Specifications

Material: Silicone or EPDM

Inside Diameter: 1.375"

Outside Diameter: 2"