Open Flex Wrap-Around Pipe Coupling Bolt Material Galvanized Steel Finish/Coating Polished Fitting Nominal Pipe Size 3 in For Movement Type Axial Material Grade 316 Maximum Operating Pressure 232 psi Overall Length 3 11/16 in Pipe Fitting Material Stainless Steel Seal Material EPDM Seal Type Included Standard Basic Fitting Shape Coupling Standards ASTM 1476 CL2 TY2 Application Air Chemical Products Fuel Gas Oil Other Hydrocarb s Solid Water Color Silver