O-ring, 157 x 3 mm – Viton, Part# 320379 – vacstellar

Description

Rietschle VC100 and VC150 pumps work hard in workshops and factories. They need strong seals to hold vacuum and keep oil where it belongs. This Viton O-ring, part number 320379, is built for those tough spots.

It is made from Viton (FKM) – a special black rubber that stands up to high heat, oils, and chemicals without cracking or swelling like regular rubber might. The size is 157 mm across the inside and 3 mm thick. It fits into a groove, gets squeezed when parts are bolted together, and creates a solid, leak-proof seal.

This O-ring is used on the VC100 and VC150 models in the V-VC family. These are oil-lubricated rotary vane pumps that pull strong vacuum for many jobs. You will see it listed as 2 pieces in most major rebuild kits and gasket kits for these pumps.