This Viton O-Ring (Part #320521) is a critical sealing component for your Pfeiffer DUO vacuum pump . It measures 75.56 mm x 5.33 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. This O-ring is designed for the Pfeiffer DUO 120A and DUO 125 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 (Part # PSK024) for the DUO 120A .
10 in stock
10 in stock
This Viton O-Ring (Part #320522) is a critical sealing component for your Pfeiffer DUO vacuum pump . It measures 88 mm x 5 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. This O-ring is designed for the Pfeiffer DUO 120A and DUO 125 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 (Part # PSK024) for the DUO 120A .
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 .
10 in stock
10 in stock
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 Support Ring (Part #520035) is a component for your Pfeiffer DUO vacuum pump . It provides essential reinforcement and stability to the pump’s internal assembly. This helps your pump run smoothly and reliably. This ring is designed specifically for the Pfeiffer DUO 120A and DUO 125 pump models . If you are rebuilding your pump or replacing worn parts, this support ring is a critical component you will need.
This is the Pfeiffer Part# PSK025 Seal Kit for the DUO 125 (Index B) and DUO 125M vacuum pumps . This comprehensive kit includes O-rings, gaskets, springs, a sight glass, a hydraulic piston, a coupling, and more . Designed specifically for the DUO 125 series, this kit provides everything you need to restore the sealing integrity of your pump during routine maintenance.
Keep your Pfeiffer vacuum pump running smoothly with this Oil Seal (Part #310149). Made specifically for the DUO 120A and DUO 125 models, this small but critical part stops oil from leaking out and dirt from getting in. If you are rebuilding your pump or fixing a small leak, this seal is exactly what you need to get the job done right.
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
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 Spacer (Part #440050) is an essential component for your Pfeiffer DUO vacuum pump . Its job is to maintain a specific distance or gap 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 120A and DUO 125 pump models . If you are rebuilding your pump or replacing worn internal parts, you may need this spacer.
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 spring (Part #490070) 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
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