The McAlpine Rubber Waste Washer RWW8 is a plumbing component designed to create a watertight seal between a waste outlet and a waste pipe. Made from high-quality, durable rubber, it offers flexibility and resistance to wear, water, and chemicals commonly found in plumbing systems. This washer is specifically designed to fit a waste outlet with a 77mm diameter and a waste pipe with a 59mm diameter, featuring a thickness of 3.0mm. Its simple installation process makes it suitable for both professional plumbers and DIY enthusiasts. By creating a tight seal, it effectively prevents leaks in various plumbing applications, making it a reliable choice for ensuring watertight connections.