The PYI Clamp Jacket is made from durable EPDM rubber that can withstand temperatures up to 300 degrees F and steam up to 400 degrees. Clamp Jackets are available for 1/2" and 5/16" hose clamps. The Clamp Jacket has an extended lip located on the bottom that acts as a guide for sliding it easily over the hose clamp tail. It is also has inside notches, which increase the grip strength onto the hose clamp. Clamp Jackets are can be used in automotive, marine, industrial and household applications.