$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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10 in stock
10 in stock
10 in stock
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)
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.
10 in stock
10 in stock
Out of stock
10 in stock
10 in stock
10 in 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.
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