$6.56
10 in stock
O-ring, 19 x 2.5 mm - Viton, Part# 4070333 - vacstellar
O-ring, 19 x 2.5 mm - Viton, Part# 4070333 - vacstellar
This O-ring is made from Viton. Viton is a special rubber that handles heat very well. It also resists oils and chemicals much better than standard rubber. Viton also has very low gas permeability, which makes it perfect for vacuum applications .
This particular O-ring fits several popular Pfeiffer pump models. It works with the DUO 125, DUO 250A, DUO 255M (Index C), and UNO 250A pumps . It is also used in smaller models like the DUO 6 and DUO 6M .
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10 in stock
10 in stock
10 in stock
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.
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.
10 in stock
10 in stock
10 in stock
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