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Black High Hardness 90 Shore A HNBR Rubber Compound

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Quick Details

Brand Name: Eson
Place of Origin: China
Color: Black, orange, red and others.
Material: HNBR compound
End product: O ring, gasket, oil seal, tube, cable, and packer
Hardness: 60-90 Shore A
Application: Oil and petroleum industry, machinery industry, etc
Processing: Compression Molding, injection molding
Packaging Detail: PE Film+ Caton
Selling Units: Single item
Single package size: 25X25X15 cm
Single gross weight: 1.0 KG
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Chengdu Eson New Material Co., Ltd.
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High hardness 90 Shore A excellent Metal bonding HNBR TC Oil seal uncured compound



Hydrogenated nirtrile results from the hydrogenation of standard nitrile.HNBR`s main chain is primarily composed of highly saturated hydrocarbons and acrylonitrile( CAN). Thanks to their saturation, the hydrocarbon segments impart heat, chemical, and ozone resistance.

Keep in mind that increased hydrogenation also leads to decreased low temperature elasticity.As with standad nitrile, the CAN content of HNB imparts toughness, as well as fuel and oil resistance.

This ACN content can be modified for specific uses. There are also a few ramaining unsaturated butadiene segments ( typically well under 10% ) to facilitate perocide curing or in some instances, sulfur vulcanization.

Peroxide- cured HNBR has improved thermal properties and will not continue to valcanize like sulfur-cured nitriles.

HNBR is also finding wider use as and alternative to fluoroelastomer rubber (FKM) in shaft seals. Why the switch?

The hardness of the mineral fillers- primarily calcium sulfate (CaSO4) and barium sulfite (BaSO3)-used to improve fluorcarbon`s wear properties can cause grooving of the metal shaft, eventullay providing a leak path that leads to seal failure.

With other materils, carbon black ( Which is not as abrasive as the mineral fillers ) might be substituted, but carbon black is not suffcient to give fluorocarbon good abrasion resistance. On the other hand,HNBR has excellent abrasion resistance, making it a viable alternative to FKM.

HNBR also has better low temperature properties and tear resistance than fluorocarbon.

General temperature range: -25F to 300℉

HNBR performs well in :

 Automotive applications

( as O rings, timing belts, fuel injector seals, fuel hose, shaft seals, diaphagms, and in air conditioning systerms )

 Oil fiels and applications

( as O rings, well-hand seals,drill-bit seals, packers,drill-pipe protectors)

HNBR does not perform well in:



Hydrocarbons ( Chlorinated )



Data sheet:

HNBR Metal bonding grade for compression molding
Press cure Sheet 170 ℃* 20 min Button 170 ℃* 30min
Post cure 150℃*4hrs
Original Properties Unit Test Methods Value
Shore A hardness - D-2240 92
Tensile strength Mpa D-412 23.9
Elongation % D-412 133
Compression set 150 ℃@ 168 hrs % D-395 23
Aging test 150℃@ 70 hrs
Shore A Hardness change - D-573 +4
Tensile strength change % D-573 +4.7
Elongation change % D-573 -22.6
Volume change % D-471 -2
Oil resistance: IRM903# 150 ℃@ 70 hrs
Shore A Hardness change - D-471 -7
Tensile strength change % D-471 -0.2
Elongation change % D-471 -19.5
Volume change % D-471 +10.3


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