O-Ring,FKM Part No.486557816 – vacstellar

Description

This is the O-Ring, FKM – Part #486557816. It is a replacement part made for the Busch COBRA NC 0400 B dry screw vacuum pump. You will also find this exact O-ring included in the official Minor Kit and Overhaul Kit for this pump model.  This O-ring is made from a material called FKM. You might also hear it called Viton®. This material is much tougher than ordinary rubber. It is specially chosen for demanding vacuum pump applications.