$9.45
This Viton O-Ring (Part #320523) is a critical sealing component for your Pfeiffer DUO 120A vacuum pump . It measures 73 mm x 5 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 120A pump, this O-ring is a must-have part. In fact, it is included as a standard component in the Seal Kit (Part # PSK024) and the Major Overhaul Kit (Part # PMK024) for this pump .
O-ring, 73 x5 mm - Viton, Part# 320523
O-ring, 73 x5 mm - Viton, Part# 320523
This is an O-ring. Its part number is 320523. An O-ring is a simple loop of elastic material. Its shape is a perfect circle. When you look at a cross-section, it looks like the letter “O”. That is where the name comes from.
You 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 120A
If you own this pump and are doing any internal repair or rebuild, you will need this O-ring.
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