The rubber gasket has the properties of oil resistance, acid and alkali resistance, cold heat resistance, aging resistance and so on. Bird seal can be directly cut into various shapes of gaskets, which are widely used in medicine, electronics, chemical industry, antistatic, flame retardant, food, etc industry.
The properties of gaskets made of different rubber materials are different. It is necessary to select products according to the actual working conditions.
Natural rubber NR
It has good corrosion resistance to weak acids, weak bases, chloride solutions, etc., relatively poor oil resistance, and has relatively large limitations in use. Recommended working temperature -57 ℃ ~ 93 ℃.
Neoprene CR
Neoprene is a synthetic rubber that is resistant to moderately corrosive solutions. It has good corrosion resistance to industrial oils and fuels, but will be corroded by compounds such as strong oxidizing acids and aromatic hydrocarbons. Recommended working temperature -51 ℃ ~ 121 ℃.
NBR
Nitrile rubber is a synthetic rubber that can maintain good corrosion resistance to oil, solvents, aromatic hydrocarbons, basic hydrocarbons, and petrochemical fuels over a wide temperature range, but it is resistant to strong oxidizing media The class is poorly tolerated. The recommended working temperature is 51 ℃ ~ 121 ℃.
Fluorine rubber KFM
Fluorine rubber is made by mixing binary and ternary fluorine raw rubber with compounding agent and vulcanizing agent. In addition to having excellent heat resistance, medium resistance and good mechanical properties, it also has low compression permanent deformation, good elasticity and long service life. Fluorine rubber has outstanding heat and oil resistance, and can be used to manufacture cylinder seals and rotating lip seals, which can significantly improve the service life. Recommended working temperature -40 ℃ ~ 232 ℃.
Silicone rubber VMQ
Silicone rubber has outstanding high and low temperature resistance, long-term use at 150 ℃ environment will not cause performance changes; can be used continuously in a 200 ℃ environment for more than 10,000 hours, can remain unique in the temperature range of -70 ~ 260 The use of elasticity and ozone resistance, suitable for long-term sealed use in high temperature places.
EPDM
Ethylene-propylene rubber has good corrosion resistance to strong acid, strong alkali, salt and chloride solutions, but it is not suitable for sealing of oils, solvents, aromatic hydrocarbons and other media. The recommended temperature is -57 ℃ ~ 176 ℃.
Advantages of using Bird rubber gasket:
Has good elasticity and recovery, can adapt to pressure changes and temperature fluctuations, has appropriate flexibility, and can fit well with the contact surface;
Does not pollute the process medium;
It does not harden at low temperature, and the shrinkage is small;
Good processing performance, easy installation and compaction;
It is easy to disassemble without bonding the sealing surface.
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