O-ring, 29.87 x 1.5 mm – Buna, Part# 320229 – vacstellar

Description

This O-ring is a round rubber ring. It may look small and simple, but it does a very important job. It sits between two metal parts inside your vacuum pump. When you tighten the parts, the O-ring gets squeezed. This squeezing action fills up any tiny gaps. It stops air and oil from leaking out. It also stops dirt from getting in. This O-ring is made from Buna, which is also called Nitrile or NBR. It is a very popular material for O-rings.