O-ring, 11.1 x 1.6 mm – Buna, Part# 2122009 – vacstellar

Description

The O-Ring 11.1 × 1.6 mm Buna (Part# 2122009) is a small sealing component used in Edwards vacuum pumps. It helps create a tight seal between pump parts and prevents air or oil leakage. Made from durable Buna (Nitrile rubber), this O-ring is commonly used during pump maintenance and repair. 

This specific O-ring is used in several Edwards vacuum pump models, including E2M28, E2M30, EH250, EH500, QMB250, and QMB500. It is also included in certain overhaul or maintenance kits used during pump servicing.