Buna-N O-Ring | 81mm ID x 3.5mm Wide | 70 Durometer (150/Pkg.) Button Head Cobalt composition provides superior wear

Cobalt composition provides superior wear resistance and heat tolerance for drilling hard metals

Made from hardened steel for durability and engineered for precise seating

3-flat shank design provides improved grip and torque transfer during operation

High-strength alloy steel offers superior load-bearing capacity and resistance to wear under repetitive cycling

Buna-N O-Ring | 81mm ID x 3.5mm Wide | 70 Durometer (150/Pkg.) Button Head Cobalt composition provides superior wearThese Buna N (Nitrile) o rings are precision molded to 81 mm inner diameter and 3. 5 mm cross section, rated 70 Shore A. Provides oil, fuel, and hydraulic resistance for general purpose service, with a service range of 40F to +250F. Material: Buna N (Nitrile) Size: 81 mm inner diameter by 3. 5 mm cross section Color: Black Applications: General purpose sealing in oil, fuel, and hydraulic systems Specifications Product type: O Ring Material: Buna N