Constructed from polyethylene, this ProPEX ring features a nominal size of 1 inch and meets ASTM F877 and F1960 standards. With an inside diameter of 1.1 inches and an outside diameter of 1.42 inches, it provides a reliable connection for PEX piping systems. The built-in stop enhances the ease of installation and ensures a secure fit. This product is designed to withstand a maximum pressure of 200 PSI, making it a dependable choice for various plumbing applications.