EN
HNBR Hydrogenated Nitrile Rubber Compound for High Temperature Oil Seals
Material: HNBR (Hydrogenated Nitrile Rubber)
Hardness: 40-95 Shore A
Color: Customizable
Operating temperature: -55°C to +180°C
Typical applications: Automotive air conditioning seals, oilfield drilling, high-speed bearing seals
- Description
- Applications
- Specifications
- Advantage
- Recommended Products
Description
HNBR is produced by hydrogenating NBR, which saturates the butadiene segments in the polymer backbone. This significantly improves heat resistance, ozone resistance, and chemical stability while retaining excellent oil and fuel resistance. HNBR offers superior mechanical properties, including high tensile strength, abrasion resistance, and low compression set, even at elevated temperatures. It performs reliably over a wide temperature range(-55°C to +180°C) and is ideal for demanding applications such as automotive air conditioning seals, oilfield drilling components, and high-speed bearing seals.
Applications
Engine crankshaft oil seal
Refrigeration system seals
Drilling mud motor seals
New energy vehicle electric drive oil seal
Specifications
|
Common Name |
Hydrogenate Nitrile Butadiene Rubber |
|
Hardness(SHA) |
40A~95A |
|
ASTM D-2000 Classification |
DH |
|
Tensile(Mpa) |
15~25 |
|
Elongation at Break(%) |
200~500 |
|
Compression Set（%） |
≤25 |
|
Temperature Range |
-55℃~+180℃ |
|
Specific Gravity（g/cm³） |
1.10~1.25 |
|
Resistances |
Good resistance to fuel and lubricating oil |
|
|
High tensile strength |
|
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Aggressive medium resistance like sulfureted hydrogen, amine, power transmission oil |
|
|
Radiation resistance |
|
Curing Systems |
Peroxide |
|
Production process |
Molding |
|
|
Extrusion |
|
Formula & color |
Custom |
|
Shelf Life |
5–7 days with accelerator, 1 -2year without accelerator. |
|
Storage conditions |
Store in a cool, dry place in sealed containers to prevent moisture absorption and loss of active ingredients. |
Advantage
Heat resistance superior to NBR
Ozone and hydrogen sulfide (H2S) resistance - suitable for oilfields and automotive air conditioning
Good dynamic performance - suitable for high-speed rotary oil seals
