Резина FKM
Color - black
H-NBR is an elastomer based on hydrogenated acrylonitrile-butadiene rubber, which can be used in aliphatic hydrocarbon (i.e. propane, butane) and mineral oils and lubricants (short time up to 170°C), also for raw petroleum which contains hydrogen sulfide. H-NBR also can be used in diluted acids and alkali, saline, even at high temperatures and in water-glycol composition. H-NBR is not compatible with fuels, which are high in aromatic hydrocarbons (composition of premium gasoline), petrol ketones (fuel- spirituous compositions), esters, ethers and chlorinated hydrocarbons (i.e. trichloroethylene and tetrachlorethylene).
H-NBR is soot free and is suitable for electrical insulation
In comparison with NBR, H-NBR has better mechanical properties, such as conventional tensile strength, relative elongation at break and abrasion resistance. The temperature range is much wider (from -25°C up to +150°C; short time up to 170°C). This material has a high ozone, weather and ageing resistance. Swelling in mineral oils is low, but depends very much on the composition of the oil. The compatibility with oils, which have a high percentage of additives, is much better than NBR.
Resistance
Resistance
| Good resistance | Medium resistance | Low resistance |
| Mineral oils and grease | 40% aromat. fuils (leaded fuils) | Aromatic hydrocarbon (toulene, benzol) |
| Aliphatic hydrocarbons (propane, butane, petrol) | Biodegradable hydraulic fluids | Chlorinated hydrocarbones (trichloroethylene; perchlorethylene) |
| Water | Silicone oil and grease (oils can cause the decrease) | Brake fluids based on glycol |
| Fire-resistant pneumatic fluids HFA, HFB, HFC | Fire-resistant hydraulic fluids HFD | |
| Adipose and vegetable oils and grease | – | Polar solvents (acetone, ethyl acetate) |
| Diesel petrol | – | Hot steam |
| Oils with big amount of additives | – | – |
| Big amount of acids and bases, salines at room temperature. | – | – |
| Raw petroleum (containing hydrogen sulfide and amines) | – | – |
Application
H-NBR is mainly used in cases, wh ere high fuel and mineral oil resistance, high elasticity at high temperatures in oil with a high percentage of additives, are required. (I.e. FPM substitute).
For example: motor seals and gearbox seals in automotive industry; seal parts for petroleum and natural gas production industry.
Main use
- Rotary seals, seals for automotive technologies
- O-rings
H-NBR Material Data Sheet
| Properties | Value | Unit | Standard |
| Hardness | 83 | Sh A | DIN 53505 |
| Density | 1,23 | g/cm³ | DIN 53479 or DIN EN ISO 1183-1 |
| Compression set 23°C / 72 h | 23,7 | % | DIN 53517 or DIN ISO 815-1 |
| Compression set 70°C / 24 h | 25,6 | % | DIN 53517 or DIN ISO 815-1 |
| Compression set 100°C / 24 h | 40 | % | DIN 53517 or DIN ISO 815-1 |
| 100 % modulus | 9,7 | MPa | DIN 53504 |
| Rebound resilience | 36 | % | DIN 53512 |
| Tensile strength | 23 | MPa | DIN 53504 |
| Elongation at break | 256 | % | DIN 53504 |
| Tear strength | 5,6 | N/mm | DIN 53515 or DIN ISO 34-1 A |
| Abrasion | 112 | mm³ | DIN 53516 |
| Min. service temperature | -25 | °C | |
| Max. service temperature | +150 | °C |