EN
HNBR Hydrogenated Nitrile Rubber Compound for High Temperature Oil Seals
Material: HNBR Rubber Compound (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
Note: We only supply rubber compounds (customizable in hardness, color, and formulation). We do not manufacture or sell any finished rubber products. After receiving the compound, customers may carry out downstream processes such as molding and curing themselves or through a third party.
- Description
- Applications
- Specifications
- Advantage
- FAQ
- Recommended Products
Description
HNBR Rubber Compound 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
|
Product Name |
HNBR Rubber Compound |
|
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 |
|
|
Aggressive medium resistance like sulfureted hydrogen, amine, power transmission oil |
|
|
Radiation resistance |
|
Curing Systems |
Peroxide |
|
Production process |
Molding |
|
|
Extrusion |
|
Form |
Sheet |
|
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
FAQ
Q: Do you sell finished products or raw materials?
A: We only supply rubber compounds, not finished products. You can choose hardness, color, and formulation based on your product needs. We mix to order and deliver.
Q: What rubber types can you handle?
A: Common types include NR, SBR, BR, NBR, EPDM, CR, silicone rubber, fluororubber, etc., subject to actual capability.
Q: Are hardness and formulation linked?
A: No. The same hardness can be achieved with different formulations. The difference lies in tensile strength, tear resistance, compression set, oil resistance, aging resistance, etc. Tell us your application and we’ll recommend the right system.
Q: Can you compound to the customer’s formula?
A: Yes. We support toll processing with customer-supplied materials or mixing to a customer-specified formula. We can also recommend a formula based on performance requirements.
Q: How do you ensure batch-to-batch consistency?
A: Through raw material batch control, fixed mixing process parameters, and sampling tests (hardness, specific gravity, Mooney viscosity, etc.).
