Color - green
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.
|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)||–||–|
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.
- Rotary seals, seals for automotive technologies
H-NBR Material Data Sheet
|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|
|Min. service temperature||-25||°C|
|Max. service temperature||+150||°C|
All above established data results from random tests which were taken from the functioning production. All data was stated based on standard test-products in accordance with ISO, DIN and ASTM standards and can substantially not be extended to the completed seal. Our practical technical recommendation, either oral, written or through tests is given in conformity with our best knowledge. However, this data is to be regarded as non-obligatory advice, also taking into consideration any protective rights of a third party, and does not acquit you from making tests with our product in relation to its adaptability for the assigned process and intendment. Utilization, application and processing of the products befall completely outside of our control and are therefore solely your liability. As regards the responsibility, it will be limited to all damages in the value of the product which we delivered and you applied. Certainly, we do assure the immaculate quality of our products in concordance with our general sales and delivery conditions.