Case Gasket, Pfeiffer, DUO, Part# 194081V

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

• Pfeiffer DUO 2.5C 

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

Most case gaskets for Pfeiffer pumps are made from cork. But the DUO 2.5C uses Viton. Here is why Viton is special:

• Resists heat: Viton can handle much higher temperatures than cork or standard rubber.

• Resists chemicals: It stands up to harsh chemicals and gases without breaking down.

• Lasts longer: Viton gaskets do not dry out or crack as quickly as other materials.

• Creates a hermetic seal: Viton provides a truly airtight, leak-proof seal .

  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.

  • Withstands harsh conditions: Because it is Viton, it keeps sealing even when things get hot or chemically aggressive .

    This gasket (Part #194081V) is a standard component in many repair kits for the DUO 2.5C. For example, it is included in:

    • Seal Kit (Part # PKE00020T) 

    • Major Overhaul Kit (Part # PKE02030T) 

    If you are buying a full kit, you will find this gasket inside.