Nitrile (Buna) (Std.). Many other elastomers available.*
Encapsulated with 1/2 NPT conduit
Valves are UL listed for Hazardous Locations — Class I, Div 1, Groups A, B, C, and D - Class II, Div 1, Groups E, F, and G; Div 2, Groups A, B, C, D, E, F, and G. "T" Rating as low as T4.
Millions of cycles, depending on application, lubrication, etc.