$31.28
10 in stock
Spring, Vane, DUO 250A/255M, Pfeiffer, Part# 490075 - vacstellar
Spring, Vane, DUO 250A/255M, Pfeiffer, Part# 490075 - vacstellar
This spring fits several larger Pfeiffer pump models. It is used in the DUO 250A, DUO 255M (Index C), and UNO 250A pumps . This is a vane spring designed for Pfeiffer DUO 250A, DUO 255M, and UNO 250A vacuum pumps. It provides the necessary tension to keep the vanes pressed against the cylinder wall, which is essential for creating and maintaining a strong vacuum Using a part like this one ensures the tension is correct and the fit is right.
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10 in stock
10 in stock
10 in stock
10 in stock
10 in stock
This Viton O-ring (Part# PL23970129) measures 65 mm inside diameter with a 5 mm cross-section. Made from Viton (FKM) , it offers excellent resistance to high heat, chemicals, oils, and fuels. It is commonly used in repair kits for Busch, Leybold, and Pfeiffer vacuum pumps and is ideal for creating tight, reliable seals in harsh environments .
10 in stock
10 in stock
This Case Gasket (Part #300215) is made from high-quality cork. It sits between the main body parts of your Pfeiffer vacuum pump. Its job is simple but very important: it creates a tight seal. This seal stops air from leaking out and keeps dirt from getting in. A good gasket means your pump holds strong vacuum pressure. This specific gasket fits the Pfeiffer UNO 250A and DUO 250A models. If you notice oil sweating or leaking from the middle of your pump, this gasket may need to be replaced.
This Viton O-Ring (Part #23970129) is a versatile sealing component for many vacuum pumps. It measures 65 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 is used in many models including the Pfeiffer DUO 120A, DUO 125, DUO 250A, DUO 255M, and UNO 250A. 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 Kits for the DUO 120A (PSK024) and DUO 125 (PSK025)
10 in stock
10 in stock
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