O-ring, 72.5 x 3.5 mm – Buna, Part# 50233 – vacstellar

This Buna O‑ring is a seal designed for vacuum pump applications. It measures exactly 72.5 mm inside diameter with a 3.5 mm cross‑section. Made from durable Buna (nitrile) material, it offers excellent oil resistance and dependable sealing for standard vacuum pump rebuilds and repairs. Part number 50233 guarantees a perfect fit for your maintenance project.

This O‑ring is a common size found in many vacuum pump assemblies. It might seal an end plate, a cover, or an internal passage. The part number 50233 identifies this specific size and material.

Using the correct O‑ring is essential. A seal that is even slightly off in size or made from the wrong material can cause leaks or fail quickly.