Manzheta Santehnicheskaja Gost -

: Standard size for adapting slightly smaller drain pipes into standard lines.

A plumbing rubber seal or cuff () manufactured according to state standards ( ГОСТ ) provides reliable, leak-free sealing in various drainage and piping applications. manzheta santehnicheskaja gost

Look for high-density, flexible synthetic rubber (such as EPDM) or polyurethane. Stiff or brittle rubber will fail under temperature fluctuations and crack easily during installation. : Standard size for adapting slightly smaller drain