The Fernco Flexseal DN100 (ICP95-100) Internal Pushfit Pipe Coupling is a high-quality coupling designed for industrial plumbing and fixtures. Made from EPDM rubber, it is rust-resistant and suitable for use in sewage systems. With a straight shape and male and female thread sizes of 4 inches, this coupling is easy to install and provides a secure connection. The set includes an adapter, ensuring everything you need for your plumbing project is included in one package. Its matt finish adds a sleek look to your piping system, making it both functional and stylish.