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
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.
This Feather Key (Part #220004) is a small but essential hardware component for your Pfeiffer DUO 125 vacuum pump. It measures 5 mm x 5 mm x 10 mm. The key fits into slots on a shaft and a rotating part. Its job is to connect them together. It transmits torque, or turning power, from one part to another. Without it, the rotating parts would slip. This key is designed specifically for the Pfeiffer DUO 125 pump model .
Keep your Pfeiffer DUO pump running smoothly with this Needle Bearing (Part #330094). This bearing is made to fit specific DUO pump models, reducing friction and supporting rotating parts inside the pump.
Get your vacuum pump back in shape with this large, durable Viton O-ring. Measuring 150 mm inside diameter (ID) x 3.0 mm width (CS) , this Part# 29361336 is a perfect fit for the Pfeiffer DUO 125 pump. It is also used in repair kits for Edwards EH/QMB booster pumps. Made from high-quality Viton (FKM) , it handles the high heat and oils of industrial vacuum systems without breaking down.
This Viton O-Ring (Part #320177) is a critical sealing component for your Pfeiffer DUO vacuum pump. It measures 18 mm (inner diameter) x 2.0 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 designed specifically for the Pfeiffer DUO 125 and DUO 255M (Index C) pump models . 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 Kit for the DUO 125 (Part # PSK025) , where exactly one of these O-rings is used .
This Viton O-Ring (Part #320529) is a critical sealing component for your Pfeiffer DUO 125 vacuum pump . It measures 410 mm x 3 mm. 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. If you are rebuilding your DUO 125 pump, this O-ring is a must-have part. In fact, it is included as a standard component in the Major Overhaul Kit (Part # PMK025) for this pump
10 in stock
This 2nd Stage Vane (Part #230103) is a replacement part made specifically for the high-performance Pfeiffer DUO 12M two-stage rotary vane pump. It is designed for use in the second stage (high vacuum stage) of this reliable pump, which can achieve an ultimate pressure down to 2 × 10⁻¹ Pa (approx. 1.5 × 10⁻³ Torr) . Vanes are the heart of any rotary vane pump, and this component is critical for achieving the pump’s maximum vacuum rating.
This is the Pfeiffer Part# 380048 Spring Plate for Non Return Valve. It is a replacement part used on the Pfeiffer DUO125 vacuum pump . This spring plate helps the non return valve work correctly inside your pump. You will also find this part included inside major overhaul kits for the DUO125 model . Keep your pump’s valve system working right with this direct-fit part.
This is the Pfeiffer Part# 380047 Valve Plate. It is a replacement part made from durable aluminium and comes with the O-ring pre-installed . It is designed specifically for the Pfeiffer DUO125 vacuum pump . This valve plate plays a key role in regulating the flow of gases inside your pump system .
This Steel Sleeve (Part #250030) is a genuine replacement part made for Pfeiffer DUO 120A and DUO 125 vacuum pumps. It is a durable, precision-engineered component made from high-quality steel. This sleeve is a critical internal part that helps your pump run smoothly and efficiently. If you are rebuilding your pump or replacing worn parts, this is the correct sleeve for the job
This 40 mm long spring (Part #490074) is a replacement part made specifically for the Pfeiffer DUO 125 vacuum pump . Inside your pump, this small but important spring provides the right tension to keep other components working together smoothly . If you are rebuilding your DUO 125 pump or fixing a performance issue, this is the correct spring
This Compression Valve (Part #580052) is a replacement part made for three popular Pfeiffer DUO series vacuum pumps. It fits the DUO 120A, DUO 125, and DUO 250A models . A compression valve helps control gas flow and pressure inside your pump. If you are rebuilding your pump, you will need one of these valves for a complete overhaul .
This 2nd Stage Vane (Part #230093) is a replacement part made for Pfeiffer DUO120A and DUO125 vacuum pumps . It is designed for use in the second stage of these two-stage pumps. Made from durable GX material, this vane helps maintain a tight seal inside your pump, which is essential for creating strong vacuum pressure. If you are rebuilding your DUO120A pump, you will need two of these vanes for a complete overhaul .
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