The NIBCO 4" PTFE Friction Washer is engineered for high-performance sealing in industrial applications. Made from premium PTFE material, this washer provides excellent chemical resistance and durability. Its 4-inch diameter ensures compatibility with a variety of fittings and valves, making it a versatile choice for plumbing and HVAC systems. The washer's design minimizes friction, enhancing the efficiency of mechanical assemblies. This product meets industry standards, ensuring reliability and performance in demanding environments.