This Viton O-Ring (Part #23970504) is a critical sealing component for your Pfeiffer vacuum pump . It measures 55 mm (inner diameter) x 5 mm (cross section). 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.
This O-ring is compatible with Pfeiffer, Busch, and Leybold pump brands . It fits the Pfeiffer DUO 250A and UNO 250A pump models, as well as Busch models WA501, WAU501, WS501, and WSU501 . If you are rebuilding your pump, this O-ring is a must-have part. In fact, it is included as a standard component in the Seal Kit for the DUO 250A (PSK027) .
10 in stock
10 in stock
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