Repair Clamp: For 4 in Pipe, 9 in Overall Lg, 304 Stainless Steel, Nitrile Rubber Gasket Label paper and even ID Label paper and even ID Cards and other necessities These repair clamps are lined with a partial gasket to seal pinholes or punctures in a tube or pipe Brand SMITH BLAIR Bolt Material Steel Gasket Material Nitrile Rubber For Pipe Size 4 in Maximum Operating Pressure 150 psi Maximum Vacuum Pressure 10 psi Overall Length 9 in Outlet Connection No Minimum Operating Temperature 20 °F Maximum Operating Temperature 180 °F Standards NSF 61 Product Type Partial Coverage Clamp Gasket Coverage Partial Coverage Number of Bolts 3 For Maximum Copper Tube Size 4 in For Minimum Copper Tube Size 2 in Features Drop In Bolts