Description
A vacuum pump is a precise machine. Every part must work together perfectly. This includes the small, but vital, O-rings.
Using a generic seal might seem okay. But it can lead to small leaks. These leaks can slow down your pump and waste energy.
This Busch O-ring is the solution. It is not a generic size. It is the part made for your pump.
It is made from Viton. This is a special material that is very tough.

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