The 3/4" x 1.5mm Black Nitrile Washers are replacement components designed for pre-2014 panels by Mueller Streamline. These washers are made from high-quality nitrile rubber, providing excellent resistance to oil, heat, and wear. With a size of 3/4 inch and a thickness of 1.5mm, they ensure a tight seal in various applications, preventing leaks and enhancing performance. Ideal for use in plumbing and HVAC systems, these washers are essential for maintaining the integrity of your installations. They meet industry standards for quality and durability.