Description: Extend the life of your diaphragms with Wilden Chem-Fuse Wet Repair Kits! Chem-Fuse diaphragms can last up to 3 times the life of a conventional diaphragm with its one piece design. Utilizing an integral piston, the outer piston wear and abrasion that is seen in conventional diaphragms is eliminated with Chem-Fuse. Wilden Wet Repair Kits contain genuine Wilden parts and only elastomers located on the wet side of the pump. Each kit contains replacements for primary wear parts and is vacuum-sealed to maintain parts integrity and cleanliness. Contains quality Wilden parts Available in Wil-Flex (Santoprene®) Preserve Wilden factory warranties