Polypipe ring seal systems offer flexibility for easy installation and effective joint fastness. Available in black, grey, brown, and white to match your color requirements. This black strap boss requires an adaptor and is part of Polypipe Building Products' Soil Systems range - PolySoil®. The soil and vent systems are comprehensive for the residential sector, providing quick, easy installation, and trouble-free performance. Options include push-fit ring seal and solvent weld, air admittance valves, fire protection sleeves, pan connectors, fixings, and ancillaries.