Perfluorether characteristic action hydraulic O-ring

 

Commonly used hydraulic rotary joint stationary ring O-ring materials are manufactured fluorine rubber, nitrile rubber, ethylene propylene rubber, and basically can adapt to the user's requirements, but the medium is 230 ~ 300 ? high temperature HTF environment, these hydraulic O-ring material does not apply, only use perfluoroether hydraulic O-ring. Since Kalrez many models, the use of performance are quite different, so it is necessary to carry out perfluoroether hydraulic O-rings applied research work on the rotary joint.

 

Perfluorether hydraulic O-ring has good elasticity, and having oil, heat aging, photoaging unique adaptability, the level of fluorine content, special performance Kalrez have a decisive influence. The current state of global production Kalrez are the United States, Japan, Italy, Britain, Russia, China and so on.

 

Kalrez Viton having similar good general physical and mechanical properties, and is adjustable within a certain range, but its high temperature resistance, special media performance Kalrez Viton General unparalleled in different brands high temperature performance is different. Solvay Solexis of Kalrez high temperature rating up to 310 ?, DuPont Kalrez high temperature rating up to 327 ?, PPE's high temperature rating up to 330 ? under laboratory conditions, the compression set test It was used to evaluate the heat resistance of rubber parts.

 

Kalrez can withstand almost all corrosive chemical media, which include ethers, ketones, benzene solvents, strong oxidants, acids, alkalis, etc., and can withstand other chemicals such as rubber can not be used: Acrylonitrile , the DNT, ethers, methylene chloride, styrene type amino, ethoxyethanol, ethylene oxide, ketones, diluents, vinyl chloride, butadiene, the DMT, esters, propylene oxide, etc., in which medium Kalrez can exhibit excellent performance. However, solvent resistance Kalrez there will be some differences because of the different grades of raw rubber, so be sure to use the correct choice of rubber grades, especially the need to pay special attention when applied to an amine compound.

 

Vulcanized rubber Kalrez also has low permeability to gases and liquids and good resistance to combustion properties, electrical insulation properties, low friction and wear properties of high-temperature thermal conductivity and high volume expansion.