Rubber Sealing Material: Characteristics Of Nitrile Rubber
Dec 23, 2021
Rubber sealing material: characteristics of nitrile rubber
Hydraulic sealing materials of rubber seals Common sealing materials include metal sealing materials, PTFE, synthetic rubber, flexible graphite sealing materials, etc. Among them, synthetic rubber sealing materials include styrene-butadiene rubber, neoprene, and silicone rubber. , Ethylene-propylene rubber, fluorine rubber, nitrile rubber sealing material, etc. are all synthetic rubber sealing materials.
The medium and characteristics of synthetic rubber "nitrile rubber" in the rubber seal material:
The nitrile rubber of synthetic rubber in the rubber seal material is the sealing material used for common rubber seals, because the nitrile rubber seal material has excellent oil resistance and aging resistance, and also has good wear resistance. Its performance is related to the content of acrylonitrile. The content of acrylonitrile is high, so it has good oil resistance. Its strength, hardness, wear resistance and water resistance increase, but its corrosion resistance, elasticity and low temperature resistance deteriorate. The rubber seals are made of NBR with high acrylonitrile content, and suitable nitrile rubber with high acrylonitrile content should be synthesized according to the actual working conditions of the medium.
Nitrile rubber has excellent corrosion resistance to mineral oils, animal and vegetable oils, and aliphatic hydrocarbons, but it is worth noting that it is not resistant to phosphate ester hydraulic oils, strong acids, aromatic hydrocarbons, esters, ketones, ethers, halogenated hydrocarbons, etc. Abrasive media properties of the media.
