The Stream33 PEX-A F1960 Expansion 1" x 1" PPSU Coupling is expertly crafted from durable PPSU (polyphenylsulfone) material, offering excellent reliability and corrosion resistance in plumbing systems. This coupling, manufactured to ASTM Standard F1960, is designed for use with PEX tubing that adheres to ASTM Standard F876. With a maximum pressure and temperature rating of 100 PSI at 180°F, it serves as a dependable component for joining PEX pipes. This versatile coupling facilitates secure and efficient connections in PEX plumbing systems, making it ideal for a wide range of residential and commercial applications.