Hydrogenated Nitrile Butadiene Rubber (HNBR), also known as highly saturated butadiene rubber or hydrogenated butadiene rubber, is a type of modified rubber obtained by hydrogenating the carbon-carbon double bonds in nitrile rubber (NBR). This modification improves the material’s heat, oxidation, and chemical resistance, making it a high-performance rubber material. Below are some details of hydrogenated NBR O-rings:

What is the HNBR O-rings Material Properties ?

• Heat resistance：Hydrogenated butyl rubber has higher heat resistance than ordinary butyl rubber, usually withstanding temperatures ranging from -40°C to +150°C or even higher.
• Oxidation resistance：Due to the hydrogenation reaction, the oxidation and ageing resistance of HNBR is significantly improved, making it suitable for use in high temperature and oxidizing environments.
• Chemical resistance：Hydrogenated NBR has good resistance to a wide range of chemicals, including certain polar solvents and strong oxidizing agents.
• Oil resistance：HNBR maintains the excellent oil resistance of NBR and has good resistance to petroleum-based oils, lubricants and fuel oils.
  Mechanical properties: HNBR has good elasticity and resistance to permanent deformation in compression, as well as good abrasion and tear resistance.

Which are the HNBR O-rings Application areas ?

Hydrogenated butyl O-rings are widely used in automotive, aviation, oil and gas, chemical, energy, mining and other industries for sealing high-temperature oil pipes, hydraulic systems, fuel systems, braking systems, engine parts and so on.

What is the HNBR O-rings Specifications and Standards ?

• Colors: Black
• Temp：-40℃ – 150℃
• Hardness range: 50~90 Shore A
• Processing technology： molding
• Standard: GB/T3452.1-2005, AS-568, DIN 3771, JIS B2401, ISO 3601-1

What should we pay attention to ?

Hydrogenated NBR materials should be stored in a dry, cool, well-ventilated place, avoiding direct sunlight and high temperatures.
Use environment:Although hydrogenated butyl rubber is heat and oxidation resistant, it may still be affected under certain extreme conditions, such as a strong oxidizer environment at high temperatures.