Nitrile (Buna) (Std.). Many other elastomers available.*
Flame-Proof construction with 1/2" NPT conduit
Valves are UL listed and CSA certified for Hazardous Locations — Class I, Div 1, Group C and D - Class II, Div 1, Groups E, F, and G: Div 2, Groups A, B, C, D, E, F, and G.
Millions of cycles, depending on application, lubrication, etc.