Hydrogenated Nitrile Rubber - HNBR

% CHANGE IN HARDNESS @ 150°C, 70 hours in oil at ATM3, ASTM‐D471 -12 MAXIMUM
% CHANGE IN VOLTAGE @ 1150°C, 70 hours in oil at ATM3, ASTM‐D471 MAXIMUM
% CHANGE IN ELONGATION 150°C, 70 hours in oil at ATM3, ASTM‐D471 MAXIMUM
OPERATING TEMPERATURE, ASTM-D471 DE -39 A 140 °C

FATS, OILS, GREASES, HYDROCARBONS, ASTM‐D471 EXCELLENT
OZONE LIGHT WEATHERING, ASTM‐D1171 VERY GOOD
ACIDS AND ALKALIS, ASTM‐D471 GOOD
RESISTANCE TO LOW TEMPERATURES, ASTM‐D2137 VERY GOOD

Hydrogenated Nitrile is a material produced by the hydrogenation of nitrile, resulting in varying degrees of saturation of the polymeric chain, along with a range of enhanced physical strength and chemical resistance properties.

Special nitrile of the highest quality in terms of its operating properties and resistance to oils, greases, hydrocarbons and excellent for making all types of gaskets and flanges that are in contact with the oil of distribution and power transformers; excellent resistance to aging by the environment, meets the standards required by manufacturers of transformers, useful in automotive gaskets.

HNBR can be produced from conventional nitrile rubber by hydrogenation of the unsaturated bonds in the butadiene units of the polymer.

The properties of HNBR depend upon the acrylonitrile content and the degree of hydrogenation of the butadiene copolymer. HNBRs have better oil and chemical resistance than nitrile rubbers and can also withstand much higher temperatures. Like NBR, this type of elastomer has excellent resistance to oils and fuels but it also has excellent resistance to many chemicals, heat (steam / hot water) and ozone. The mechanical properties like tensile and tear strength, elongation, and abrasion resistance are also excellent.

Hydrogenated Nitrile, it's an elastomer that offers an excellent range of performance at a cost between nitrile rubber and perfluoroelastomers. It fills the gap between these two elastomers in many applications where resistance to heat and aggressive media are required simultaneously.

In addition, it's an excellent choice for applications where

• resistance to ozone and weathering
• industrial lubricants
• amine-based corrosion inhibitors
• sour gases
• hot water/steam up to 150°C is required

Some typical applications for Hydrogenated Nitrile include

• gaskets and seals
• especially for the oil and gas industry
• accumulator bladders; and diaphragms

The typical working temperature range for Hydrogenated Nitrile is -25°C to +160°C.

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