Fluorinated compounds

According to ASTM 1418, fluorocarbon elastomers are divided into 3 groups: FKM, FFKM and FEPM.

We produce black and coloured, bisphenol and peroxide cured FKM compounds, ranging from 50 to 90 ShA, to suit your particular need and application.

We also produce FFKM and FEPM compounds.

All fluorocarbon elastomers have oxidizable carbon-hydrogen bond replaced with a thermally stable carbon-fluorine bond. The polar nature of fluorine atom provides exceptional resistance to oxidation, weathering, flame, as well as excellent resistance to oils and solvents that would normally attack most other natural and synthetic rubbers.

Given the excellent thermo and chemical resistance, these polymers are used for production of compounds, mainly for the manifacture of technical products such as gaskets, hoses, shaft seals, O-rings, or basically any items facing harsh thermal environments and contact with contact with mineral oils, hydraulic fluids, fuels, aliphatic-aromatic and chlorinated hydrocarbons, solvents and other chemicals.



Recommended for contact with

Mineral oil and grease

Vegetable oil and grease       

Low swell in ASTM 1, IRM 902 and IRM 903 oils

Phosphate esters

Silicone oil and grease

Aliphatic hydrocarbons (gas – propane/butane)

Fuels, also fuels with methanol content (E5, E10, E85)

Aromatic hydrocarbons (benzene, toluene)

Chlorinated hydrocarbons (carbon tetrachloride and trichlorethylene)

Aliphatic and aromatic hydrocarbons

Chlorinated hydrocarbons (carbon tetrachloride and trichlorethylene)

Polar solvents (acetone, methylethylketone, ethylacetate, diethylether, and dioxane)

Inorganic and organic acids

Water and steam

Acids and bases

Phosphate esters


Engine oils

Engine coolants

EP gear and transmission oils

Steering fluids

Steam up to 170°C

Brake fluids, including DOT 3

Pulp and paper liquors

Silicone oil and grease

NOT recommended for contact with

Glycol based brake fluids

Ammonia gas amines, alkalis

Superheated steam

Low molecular organic acids (formic and acetic acids)


Fluorinated refrigerants (R11, 12, 13, 113, 114, etc.), except Freon 21

Low swell in chlorinated cyclic ethers and fluorocarbon oils

Red fuming nitric acid

Nitrogen tetroxide

Aromatic fuels


Chlorinated hydrocarbons (carbon tetrachloride and trichlorethylene)

Service temperature range

Normally down to –26°C. with special compounding down to  -40°C.

Long term exposure to +200°C, with peaks up to +275°C with shorter life expectancy.

Down to -15°F till -26°C, depending on polymer type and compound.

From +230°C to +327°C, depending on polymer type and compound.

Down to approximately –4°C

Up to +230°C.


Contact us

Gomline d.o.o.
Cesta v Gorice 42
1000 Ljubljana

+ 386 (0)1 2574 394