Case Gasket, Cork-Pfeiffer DUO, Part# 300165

This is a flat, sheet-like gasket made from cork. Its part number is 300165. You place it between the two main halves of the pump’s outer body, also called the “case” . Think of it like the rubber seal on a jar lid. Without it, the jar would not stay closed tightly. With it, everything stays sealed and secure.

This cork case gasket is made specifically for one pump model:

• Pfeiffer DUO 2.5 

If you own this pump and are doing any repair work that requires opening the case, this is the correct gasket for the job.

The job of this gasket is critical for your pump’s health.

• Prevents oil leaks: It stops oil from seeping out where the two case halves meet.

• Maintains vacuum: It stops outside air from being sucked into the pump. This keeps your vacuum pressure strong and stable.

• Keeps dirt out: A good seal also stops dust and debris from entering the pump from the outside.