What is HNBR?
Hydrogenated nitrile butadiene rubber (HNBR) is the product of hydrogenation of carbon and carbon double bonds on molecular chains in nitrile butadiene rubber, so it is also known as highly saturated nitrile butadiene rubber
What is the grade of Dawn Brand HNBR
| Grade | Acrylonitrile content | Mooney viscosity | Iodine number | Characteristics and uses |
| DN1818 | 18 | 80 | 11-22 | Suitable for all kinds of low temperature oil resistant seals, shock absorbers and gaskets. |
| DN2118 | 21 | 80 | 11-22 | |
| DN3408 | 34 | 80 | 4-10 | Excellent heat resistance, suitable for synchro belts, multi-wedge belts, O-rings, gaskets and seals. |
| DN3418 | 34 | 80 | 11-22 | Standard medium and high nitrile grade, excellent dynamic performance and processing performance, suitable for synchronous belts, O-rings, gaskets, oil seals and petroleum industry accessories. |
| DN3428 | 34 | 80 | 28-36 | Excellent low temperature compression permanent deformation and oil resistance, suitable for oil resistant seals, rollers and dynamic oilfield components. |
| DN3708 | 37 | 80 | 4-10 | Excellent heat resistance, ozone resistance, oil resistance, medium resistance, suitable for fuel hose, synchronous belt, sealing ring, O-ring and gasket |
| DN3718 | 37 | 80 | 11-22 | Standard medium and high nitrile grade, with excellent heat resistance, ozone resistance and dielectric resistance. |
| DN3719 | 37 | 120 | 11-22 | |
| DN3728 | 37 | 80 | 28-36 | Excellent oil resistance, chemical stability to various lubricating oil additives, suitable for O-rings, gaskets, oil seals, hydraulic hoses, timing belts, blowout preventers, wellhead seals and pump seals. |
| DN4308 | 43 | 80 | 4-9 | With excellent heat resistance, oil resistance and solvent resistance, suitable for fuel resistance, industrial refrigerant hose, diaphragm and oil seal. |
| DN4318 | 43 | 80 | 12-20 | Standard high nitrile grade. Excellent oil resistance, heat resistance, chemical medium resistance and ozone resistance, suitable for automotive oil resistant hoses, diaphragms, seals and oil seals. |
| DN4328 | 43 | 80 | 24-32 | Excellent resistance to automotive fuel, aromatic solvents, freon, acid, alkali, etc., suitable for fuel hoses, diaphragms and oil seals. |
The successful application of Dawn Brand HNBR
(1) Aircraft oil resistant transmission pipe
Material characteristics:
- High strength, tear resistance;
- Excellent resistance to aviation kerosene, hydraulic oil and lubricating oil;
- Excellent resistance to ozone aging and hot oxygen aging;
- -40 ℃ ~ +150℃ long cycle use.
(2) Oil resistant packer rubber barrel for oil field industry
Material characteristics:
- High strength, high wear resistance, excellent compressive performance;
- Excellent sealing performance and dimensional stability;
- Excellent resistance to hydrogen sulfide and oil, to meet the needs of deep well oilfield applications;
- -40 ℃ ~ +150℃ long cycle use.
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