This Special Steel Key (Part #220007) is a custom-designed hardware component for your Pfeiffer DUO vacuum pump. Unlike standard keys, this one is made for a specific application within the DUO 255M pump . 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 255M (Index C) pump model and is a critical component in the rotating assembly
10 in stock
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
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.
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