This crimp clamp ring meets the standards for ASTM F1807, ASTM F877, CAN/CSA B137.5, NSF/ANSI 14, has a length of 21/32 inch, a maximum operating pressure of 80 psi and is designed for the following applications: potable water. It has an operating temperature of 33 Degrees F to 200 Degrees F, and is made of copper. In addition, it is a crimp ring.