| NBR Material | FKM Material | |
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| Description | Nitrile rubbe has excellent resistance to petroleum and non-polar solvents, as well as good mechanical properties. The specific performance mainly depends on the content of acrylonitrile in it. Those with acrylonitrile content higher than 50% have strong resistance to mineral oil and fuel oil, but their elasticity and permanent compression deformation at low temperature become worse, and low acrylonitrile Nitrile rubber has good low temperature resistance, but reduces oil resistance at high temperature. | Fluorine rubber has the characteristics of high temperature resistance, oil resistance and corrosion resistance of various chemicals, and is an indispensable material for cutting-edge science and technology such as modern aviation, missiles, rockets, and aerospace. In recent years, with the continuous improvement of the automotive industry’s requirements for reliability and safety, the amount of fluororubber used in automobiles has also increased rapidly. |
| Temperature range | -40℃~120℃ | -45℃~204℃ |
| Advantage | *Good oil resistance, water resistance, solvent resistance and high pressure oil resistance
*Good compressive properties, wear resistance and tensile properties *Rubber parts for making fuel tanks and lubricating oil tanks *Rubber parts used in fluid media such as petroleum-based hydraulic oil, gasoline, water, silicone grease, silicone oil, diester-based lubricating oil, glycol-based hydraulic oil, etc. |
*Excellent chemical stability, resistant to most oils and solvents, especially various acids, aliphatic hydrocarbons
Aromatic hydrocarbons and animal and vegetable oils *Excellent high temperature resistance *Good aging resistance *Excellent vacuum performance *Excellent mechanical properties *Good electrical properties *Good permeability
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| Disadvantage | *Not suitable for use in polar solvents such as ketones, ozone, nitro hydrocarbons, MEK and chloroform
*Not resistant to ozone, weathering, and heat-resistant air aging |
*Not recommended for ketones, low molecular weight esters and nitro-containing compounds
*Poor low temperature performance *Poor radiation resistance |
| Compatible with | *Aliphatic hydrocarbons (butane, propane), engine oils, fuel oils, vegetable oils, mineral oils
*HFA, HFB, HFC hydraulic oil *Low-concentration acid, alkali, salt at room temperature *Water |
* Mineral oils, ASTM 1 IRM902 and 903 oils
* Non-flammable HFD hydraulic fluid * Silicone oil and silicone ester * Mineral and vegetable oils and fats * Gasoline (including high alcohol gasoline) * Aliphatic hydrocarbons (butane, propane, natural gas) |
| Application | NBR rubber is widely used in various oil-resistant rubber products, various oil-resistant gaskets, gaskets, casings, flexible packaging, soft rubber hoses, cable rubber materials, etc., and has become an indispensable elastic material in the automotive, aviation, petroleum, photocopying and other industries. | FKM rubber is mainly used to manufacture high temperature, oil and chemical corrosion resistant gaskets, sealing rings and other seals; secondly, it is used to manufacture rubber hoses, impregnated products and protective equipment. |
Post time: Jan-20-2022