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 .
This is the Pfeiffer Part# PMK028 Major Overhaul Kit for the DUO 255M (Index C) vacuum pump. This complete kit includes everything you need for a full pump rebuild: vanes, springs, seals, O-rings, valves, bearings, gaskets, coupling, sight glass, and more. Following Pfeiffer’s recommended 4-year maintenance schedule, this kit restores your pump to like-new condition.
10 in stock
10 in stock
This is the Pfeiffer Part# 380052 Spring Plate. It is a replacement part designed specifically for the Pfeiffer DUO 255M (Index C) vacuum pump . This spring plate plays a vital role in the pump’s spring mechanism, ensuring optimal performance in vacuum applications
This is the Pfeiffer Part# 380049 Valve Plate. It is a replacement part used on Pfeiffer DUO250A and DUO255M (Index C) vacuum pumps . You will also find this valve plate included inside major overhaul kits for these pump models . Keep your pump’s valve system working right with this direct-fit part.
10 in stock
This small but important part is a Pfeiffer sealing ring, also known as a Dowty seal. The part number is 300216. It is made from tough FKM rubber and measures exactly 10.4 x 16 x 2 millimeters. If you have a Pfeiffer DUO 255M vacuum pump (Index C version), this seal helps stop leaks and keeps the pressure just right. Replace your old or worn seal with this one to keep your pump running strong.
This is the Pfeiffer Part# PSK028 Seal Kit for the DUO 255M (Index C) vacuum pump . This comprehensive kit includes 21 different sealing components such as O-rings, shaft seals, gaskets, and valve seats . Designed specifically for the DUO 255M, this kit provides everything you need to restore the sealing integrity of your pump during routine maintenance.
10 in stock
This Valve Seat (Part #390028) is a specialized component for your Pfeiffer DUO vacuum pump . It works together with the valve spindle to create a tight seal. This seal controls the flow of gases through the pump. A worn or damaged valve seat can cause leaks and reduce vacuum performance. This valve seat is designed specifically for the Pfeiffer DUO 125 and DUO 255M (Index C) pump models . If you are rebuilding your pump or fixing a valve leak, this is the part you need.
This Cylinder Sieve (Part #560014) is a fundamental filtration component for your Pfeiffer DUO vacuum pump . Its job is to trap debris and contaminants. This keeps your pump clean and running efficiently. A clean pump means better vacuum pressure and a longer pump life. This sieve is designed for the Pfeiffer DUO 250A, DUO 255M (Index C), DUO 120A, and DUO 125 pump models . If you are rebuilding your pump, this is a part you will need. In fact, it is included in major overhaul kits for these pumps
10 in stock
10 in stock
This Spacer (Part #440056) is an essential component for your Pfeiffer DUO 255M vacuum pump . Its job is to maintain proper spacing between different parts inside the pump. It also helps keep everything perfectly aligned. The right spacing and alignment are critical for smooth, efficient operation. This spacer is designed specifically for the Pfeiffer DUO 255M (Index C) pump model . If you are rebuilding your pump or replacing worn internal parts, you may need this spacer.
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 54 mm long spring (Part #490077) is a replacement part made for two popular Pfeiffer vacuum pumps: the DUO 250A and the DUO 255M (Index C) . Inside your pump, this spring stores and releases mechanical energy. That is a fancy way of saying it pushes and pulls other parts so everything works the way it should. If you are rebuilding your pump or fixing a performance issue, this is the correct spring
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