This Lochinvar gasket is specifically designed for copper tubes. It is constructed from high-quality, durable materials that ensure a tight seal and prevent leaks. The gasket fits snugly within the tube, providing a secure connection that can withstand high pressures and temperatures. Its primary function is to create a seal between two joining surfaces, preventing any fluid or gas leakage. The Lochinvar Copper Tube Gasket is compatible with various models of boilers and water heaters, making it versatile in its application. It has been manufactured to meet industry standards for size and fit, ensuring reliable performance.