O-ring, FKM 283 x 4 mm- Part # 486539796 – vacstellar

Description

An O-ring might seem like a simple rubber ring, but it is one of the most important parts of your vacuum pump. The VacStellar O-ring, FKM 283 x 4 mm (Part # 486539796) is a replacement part. It is made to fit perfectly and work reliably.

This O-ring is made from FKM, which is also known by the brand name Viton. It is a high-performance rubber that is specially chosen for vacuum pumps. It measures 283 mm across and is 4 mm thick, making it a direct fit for the Busch COBRA NC0630B vacuum pump.