The U.S. Seal PS-2136 shaft seal is designed for compatible 3/4 inch shaft pump applications and uses Buna sealing material to restore a dependable wet-end seal. Larger shaft pumps still rely on the same basic truth as smaller units: if the shaft seal fails, the rest of the assembly is exposed to problems that can quickly multiply.This replacement is especially useful when the original seal is leaking, flattened, or simply worn beyond confidence during service. Matching the correct 3/4 inch shaft size helps the repair stay precise, while Buna material provides a reliable seal option for supported applications.The PS-2136 is a solid repair choice when the rebuild needs to be correct, practical, and ready for continued service. U.S. Seal PS-2136 shaft seal For compatible 3/4 inch shaft applications Buna sealing material Helps restore dependable wet-end sealing Useful when the original seal has failed or aged out