FKM flourished blends were invented and introduced on the market by DUPONT® in 1958 under the name of VITON® and are mixed polymers made up of highly fluorinated hydrocarbons.
Fluorinated elastomers have the partially or fully fluorinated molecular chain.
If it is totally fluorinated we have perfluoro FFKM elastomers, if we do not have it completely FKM fluoroelastomers.
Although there are many variants and qualities, Viton is considered to be the most valuable rubber on the market.
Particularly suitable for the petrochemical, chemical and pharmaceutical industries, it has excellent resistance to hydrocarbons, solvents and many high-concentration chemicals. Also good for weathering, ozone resistance, aging and high thermal excursions.
Known for its exceptional temperature resistance at 200 ° C, in some formulations you can touch the 350 ° c cracks.
- Good resistance to hot fuels and oils (thanks to the presence of fluoride)
- Good fat resistance
- Resistant to acetone acetone ketones
- High heat resistance
- Resistant to aging
- High mechanical strength
- Good resistance to flame (for the presence of fluorine)
- Low solvent polar solvents such as acetone, ethylene acetate, diethyl ether and dioxane
- Low glycogen-based brake fluid resistance
- Poor water vapor resistance overheated (breaks down the elastomer)
- Poor resistance to low molecular weight organic acids such as formic acid and acetic acid and chlorosulphonic acid.
Mechanics: Used in most cases in the form of oring, Viton finds a lot of space in the mechanical and extreme engineering industry but also where good acid resistance and high use temperatures are required
Food: On request it is available in a food version.
Electric: poor dielectric quality limits its use in this field
Chemical: its exceptional resistance to chemical agents puts it as one of the elusive milestones. It is always advisable to consult the comparison tables
See the file for technical specifications