This Steel Ball (Part #330096) is a component for your Pfeiffer DUO 125 vacuum pump . It measures 8 mm in diameter and features a mirror finish. The ball is typically used as a check valve inside the pump. It allows gas to flow in one direction and blocks it from flowing backward. A smooth, perfectly round ball is essential for a good seal. This steel ball ensures smooth and efficient pump operation . If you are rebuilding your pump, this is a critical component you will need .
10 in stock
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 Cork Case Gasket (Part #300165) is made specifically for the Pfeiffer DUO 2.5 vacuum pump. It goes between the two main halves of the pump body. Its job is to create a tight, reliable seal. This stops oil from leaking out. It also stops air from leaking in. A good seal means your pump holds strong vacuum pressure. If you are opening the pump for maintenance or a minor repair, you must replace this gasket. It is a one-time-use part .
This Cork Case Gasket (Part #194081) is made specifically for the Pfeiffer DUO 2.5 vacuum pump. It goes between the two main halves of the pump body. Its job is to create a tight, reliable seal. This stops oil from leaking out. It also stops air from leaking in. A good seal means your pump holds strong vacuum pressure. If you are opening the pump for maintenance or a minor repair, you must replace this gasket. It is a one-time-use part .
This Case Gasket (Part #194081V) is made from Viton, a high-performance synthetic rubber. It is designed specifically for the Pfeiffer DUO 2.5C vacuum pump. Its job is to create a tight, chemical-resistant seal inside the pump casing. This stops leaks and keeps your vacuum pressure strong. Unlike standard cork gaskets, this Viton version offers better resistance to heat and chemicals . If you are opening your DUO 2.5C for repair or maintenance, this gasket should be replaced.
10 in stock
This Cheese Head Screw (Part #400056) is a hardware component for your Pfeiffer DUO vacuum pump . It is used to secure various parts of the pump together. A good quality screw ensures a tight, stable fit. This helps your pump run smoothly and safely. This screw is designed specifically for the Pfeiffer DUO 10 and DUO 10C pump models . If you are missing a screw or replacing a damaged one, this is the correct part.
10 in stock
This Disc Coupling (Part #540005) is a component for your Pfeiffer DUO 120A vacuum pump . It connects the motor shaft to the pump shaft. Its job is to transmit torque, or turning power, from the motor to the pump. It also compensates for small misalignments between the two shafts. This helps the pump run smoothly and reduces wear. This disc coupling is designed specifically for the Pfeiffer DUO 120A pump model .
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.
This Dowty Seal (Part #4088022) is a replacement part made for two popular Pfeiffer pump models: the UNO 1.5A and the DUO 1.5A . A Dowty seal is a special type of seal. It has a rubber ring bonded to a metal outer ring. This design creates a very tight, reliable seal that stops oil from leaking out and air from getting in . If you are rebuilding your small Pfeiffer pump or fixing a leak, this is exactly the part you need.
10 in stock
10 in stock
10 in stock
Pfeiffer vacuum pump with this high-quality Pleated Filter (Part #700074). It comes with a strong rubber housing that creates a tight seal. The pleated design captures more dirt than flat filters. This filter fits the Pfeiffer DUO 125 and DUO 255M pumps. It helps keep the oil clean and the pump running strong. If your old filter is dirty or clogged, swap it out with this one.
Pfeiffer vacuum pump running smoothly with this Star Shaped Screen Filter (Part #700073). Designed specifically for the DUO 120A model, this small but essential part traps dirt and debris before they can enter your pump. It helps protect the internal parts, so your machine lasts longer and works better. It is a direct replacement for your old or clogged filter.
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