Shaft Seal Sleeve, 35x40x30 – Part# 20405021

This is a thin metal sleeve. It slides over your existing pump shaft. Part number 20405021 has specific dimensions: 35mm inner diameter, 40mm outer diameter, and 30mm long .

The sleeve gives you a brand new, perfectly smooth surface for the seal to ride on. You install the sleeve over the worn part of the shaft. Then you put a new shaft seal on top of the sleeve.

This sleeve is made for specific pumps. According to the product page, it fits :

Edwards Pumps:

• Edwards E2M175

• Edwards E2M275

Busch Pumps:

• Busch R5 EVA CB 0250B

The E2M175 and E2M275 are large, two-stage rotary vane pumps. They are used in industrial applications like vacuum metallurgy, drying, and coating . If you own one of these pumps, this sleeve is what you need.