Coupling Housing Gasket, Leybold, Trivac, Part# 23973036 – vacstellar

The coupling housing gasket is a flat seal that sits between the motor coupling and the pump body.

It stops oil from leaking out around the drive shaft. When the old gasket gets hard or damaged, you often see oil on the floor or around the motor – and the pump can slowly lose performance.

This part matches the original Leybold number 23973036 exactly. You’ll find it in most major repair kits for these Trivac pumps – just one gasket per pump.

Replacing it is simple once the pump is open. Clean the mating surfaces, lay the new gasket in place, and tighten everything back up. It’s one of those small jobs that makes a big difference in keeping your pump dry and reliable.