O-ring, 7.65 x 1.78 mm – Buna, Part# 85039449 – vacstellar

Description

This is a Buna rubber O-ring measuring 7.65 mm inner diameter and 1.78 mm thickness (Part# 85039449). It is a direct replacement for Rietschle vacuum pumps. The Buna material offers good resistance to oil, air, and wear. A small but essential sealing part. An O-ring is a simple round rubber ring. But without it, your vacuum pump will not work right. This particular O-ring is made from Buna rubber. Buna is also known as Nitrile. It is a very common and reliable material for sealing.