D-Waterproof.5 polyethylene base with rubber on its inner shaft designed for effective sealing of pipes with a thickness of 115 mm. Its construction combines the durability of polyethylene with the elasticity of rubber, ensuring a watertight seal. This device is easy to install with the same C2 and provides an effective barrier against leaks and seepage in piping systems. A reliable choice for sealing applications in the plumbing and construction field.