Shim, 0. 04, Edwards, Dry pump, iH80, iH160, Part# 40801078

A shim is a thin, flat piece of metal. It looks like a tiny flat washer. But it is not a seal. It is not a gasket.

A shim is a spacer. You put it under bearings or between other parts to change their position by a very small amount .

This particular shim has a thickness of 0.04. It is designed for fine adjustments inside the pump.

This shim is made for Edwards iH series dry pumps. According to the product page and the Edwards Spares Data Sheet, it fits :

• Edwards iH80

• Edwards iH160

The iH series are dry pumping systems. They do not use oil in the pumping chamber. They are used in semiconductor manufacturing, thin film deposition, and vacuum heat treatment.

The iH80 and iH160 are the smaller models in the iH family. The number refers to the pumping speed (80 m³/h and 160 m³/h).