$106.40
10 in stock
Valve Exhaust, 120A, 250A, 255M, Pfeiffer, DUO, UNO, Part# 580053 - vacstellar
Valve Exhaust, 120A, 250A, 255M, Pfeiffer, DUO, UNO, Part# 580053 - vacstellar
This is a exhaust valve designed for Pfeiffer DUO 120A, DUO 250A, DUO 255M, and UNO 250A vacuum pumps. It controls the release of exhaust gases, ensuring proper pressure regulation and quiet, efficient operation .
This valve is used in several popular Pfeiffer models. It fits the DUO 120A, DUO 250A, DUO 255M (Index C), and UNO 250A pumps . These are industrial‑grade pumps that run in demanding environments.
You will often find this exhaust valve included in major overhaul kits. For example, it is part of the PMK024 Overhaul Kit for the DUO 120A pump and the PMK026 Overhaul Kit for the UNO 250A pump . That means it is a standard replacement part during a full pump rebuild.
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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 .
Out of stock
This is the Pfeiffer Part# PSK027 Seal Kit for the DUO 250A vacuum pump. This comprehensive kit includes O-rings, shaft seals, gaskets, and valve seats. Designed specifically for the DUO 250A, this kit provides everything you need to restore the sealing integrity of your pump during routine maintenance.
10 in stock
10 in stock
10 in stock
This Rotex 55 spider coupling (Part # 0512000116) is a elastomeric insert designed for KTR Rotex Size 55 jaw couplings . Made from high-strength T-PUR material with 92 Shore A hardness, this orange spider sits between the coupling hubs to transmit torque, dampen vibrations, and compensate for minor shaft misalignments . It is ideal for use with vacuum pumps driven by electric motors where reliable, low-maintenance power transmission is required.
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.
Out of stock
10 in stock
This Dowty Seal (Part #38250019) is a replacement part made for Pfeiffer vacuum pumps. It measures exactly 12.7 mm inside, 18 mm outside, and is 1.5 mm thick. This seal works with both the DUO 250A and UNO 250A pump models. Its job is to create a tight, airtight seal that stops leaks and keeps your pump running at its best. If you are rebuilding your pump or fixing a small leak, this is the right part for the job.
10 in stock
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