$44.66
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.

Dowty Seal, Pfeiffer, UNO, DUO, Part# 4088022

Dowty Seal, Pfeiffer, UNO, DUO, Part# 4088022
A regular O-ring or flat gasket is just rubber. A Dowty seal is smarter. It has a rubber ring bonded tightly inside a metal outer ring . When you tighten a bolt or fitting onto a Dowty seal, the rubber compresses and creates a perfect seal. The metal ring keeps it from squishing out too much. The result? A seal that works great for both vacuum and pressure applications.
This Dowty seal is made for these Pfeiffer pump models :
UNO 1.5A (single stage pump)
DUO 1.5A (two stage pump)
Check your pump’s model tag before ordering. Look for “UNO 1.5A” or “DUO 1.5A” on the label
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