The Gruvlok Figure 7011 Standard Coupling is a flexible coupling designed to join roll grooved or cut grooved 30" O.D. pipe for a wide range of applications, including CommercialIndustrial Construction, Mining, Process Piping and many others. This couplings operating temperature ranges from 40F to 230F (-40C to 110C) with the Grade E EPDM gasket and 20F to 180F (-29C to 82C) with the Grade T Nitrile gasket. The operating pressure ranges 15" of Hg. vacuum to 300 psig on standard wall steel pipe.