O-ring, 410 x 3 mm – Viton, Part# 320529

$38.99

This Viton O-Ring (Part #320529) is a critical sealing component for your Pfeiffer DUO 125 vacuum pump . It measures 410 mm x 3 mm. Made from Viton, a high-performance synthetic rubber, this O-ring creates a tight, reliable seal. It prevents leaks and keeps your vacuum pressure strong. If you are rebuilding your DUO 125 pump, this O-ring is a must-have part. In fact, it is included as a standard component in the Major Overhaul Kit (Part # PMK025) for this pump 

  • Valve Plate, Leybold, Sogevac, SV100, SV180, Part# PL71001674

    O-ring, 410 x 3 mm - Viton, Part# 320529

    $38.99

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      Valve Plate, Leybold, Sogevac, SV100, SV180, Part# PL71001674

      O-ring, 410 x 3 mm - Viton, Part# 320529

      $38.99

      Ask a Question

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      This is an O-ring. Its part number is 320529. An O-ring is a simple loop of elastic material. Its shape is a perfect circle. 

       place this O-ring into a groove between two metal parts. When you tighten the parts together, the O-ring gets squished. It fills the tiny gap completely. This creates an airtight, leak-proof seal

      This O-ring is made specifically for one pump model:

      • Pfeiffer DUO 125 

      If you own this pump and are doing any internal repair or rebuild, you will need this O-ring. It is also compatible with the DUO 255M (Index C) model in some applications.

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