The Black FloPlast Soil Ring Seal Solvent Boss Adaptor 40mm is designed to provide a strong, watertight connection between 40mm waste pipes and a soil stack via a boss fitting. This adaptor is ideal for use with solvent weld systems, ensuring a permanent, secure bond when installed with appropriate solvent cement. It’s typically used in conjunction with a boss pipe or strap boss and is suitable for applications such as connecting bathroom or kitchen waste to the soil system. Made from robust plastic for long-lasting durability, it’s perfect for both new builds and refurbishments.