Coupling, Nominal Size: 12 inch, 260 psi Max. Pressure, ANSI 304 Stainless Steel Bolt, 17.5 inch Bolt, EPDM Compounded Gasket, 10.8 inch Length, 16.6 inch Dia, Carbon Steel Tubing Coupling Body, ASTM A 53 Grade A Steel Center Ring, ASTM A 795 Steel End Rings, ANSI 304 stainless Steel Nuts, ANSI 304 Stainless Steel Bridge, Temperature Range: -20 To 180 Deg F Continuous Operations, 215 Deg F Shorter Operating, 125 Deg F Above Ground Applications, 150 Deg F Under Ground Applications (Working Temperature), 2 Bolts, Standards: AWWA C-219, NSF-61 and NSF-372, Includes Center Sleeve And Two Compression End Rings, For Used to Repairs and Connects a Wide Range of Pipe Types and Circumferences