KamGum

Production materials that we use

EPDM NBR VMQ HNBR FPM NR SBR Ethylene-propylene rubber mixtures This rubber is a copolymer of propylene, ethylene and diene. Ethylene-propylene vulcanizates are good insulators with special resistance to atmospheric factors. They are often used for seals working in water installations.

Temperature from -50°C to +130°C

Resistant to:

✔	hot water and steam
✔	brake fluid
✔	glycol
✔	ozone
✔	soap solutions and washing agents
✔	acid and alkali solutions

Sensitive to:

✘	mineral oils
✘	mineral greases
✘	gasoline

Mixtures based on nitrile rubber Nitrile is a copolymer of butadiene and acrylonitrile. The percentage ratio of these chemical compounds determines the degree of oil and frost resistance. Occurs as an isoprene polymer. The nitrile vulcanizate used in hydraulics and pneumatics is characterized by high flexibility and tensile strength, oil resistance, low compression deformation.

Temperature from -30°C to +100°C

Resistant to:

✔	motor, transformer and heating oils
✔	lubricants
✔	hydraulic fluids
✔	propane
✔	butane
✔	alcohols
✔	water

Sensitive to:

✘	high temperatures
✘	glycol based brake fluids
✘	concentrated acids and lyes
✘	gasoline

Mixtures based on silicone rubber Symbol according to ASTM 1418 - VMQ. It shows good dielectric properties, low compression deformation, very good resistance to oxygen and ozone. A special advantage of using silicone vulcanizates is their resistance to high and low temperatures. Low tear strength and relatively high abrasion eliminates silicone from applications in moving joints.

Temperature from -50°C to +200°C

Resistant to:

✔	mineral oils and greases
✔	diluted salt solutions
✔	oxygen
✔	ozone

Sensitive to:

✘	concentrated acids and alkalines
✘	glycol based brake fluids
✘	gasoline

Mixtures based on hydrogenated acrylonitrile rubber Acrylonitrile rubber is a copolymer of acrylonitrile and butadiene with complete or partial hydrogenation of the double bond of the butadiene component. Peroxide crosslinking through double bond increases temperature and oxidative stability. Rubber materials prepared in this way they are characterized by high mechanical strength and greater resistance to abrasion. They show slightly higher media resistance as in the case of NBR.

Temperature from -30°C to +150°C

Resistant to:

✔	vegetable and animal fats (temporarily up to 170°C)
✔	hydraulic fluids based on mineral oils
✔	higher resistance to temperature
✔	diesel fuels
✔	ozone
✔	dilute acids, alkalines and salts (even at elevated temperatures)

Sensitive to:

✘	fuels with a high aromatic content (gasoline, alcoholic mixtures)
✘	glycol based brake fluids
✘	concentrated acids and alkalines
✘	gasoline

Fluorinated rubber compounds Symbol according to ASTM 1418-FKM. Fluorine vulcanizates known under the name VITON are characterized by particularly high heat and chemical resistance. The share of fluoride significantly affects non-flammability. They show low gas permeability and, under vacuum, a minimal weight loss. The mechanical properties of these rubbers are similar to traditional mixtures.

Temperature from -25°C to +250°C

Resistant to:

✔	UV radiation
✔	aggressive chemical compounds
✔	oils and grease
✔	inorganic acids (hydrochloric, sulfuric, phosphoric, nitric)
✔	vacuum
✔	ozone

Sensitive to:

✘	concentrated organic acids (acetic, formic)
✘	brake fluids
✘	acetone

Mixtures based on natural rubber Symbol according to ASTM 1418 - WR. This rubber is a multiparticulate polymer of isoprene. It is characterized by very good resistance to tearing and tearing, flexibility and resistance to low temperatures. It is used when it is necessary to dampen vibrations as well as high fatigue resistance.

Temperature from -50°C to +70°C

Resistant to:

✔	glycol based brake fluid
✔	low acid acids and lyes
✔	water

Sensitive to:

✘	motor fuels
✘	mineral greases and oils
✘	gasoline

Mixtures based on steroid butadiene rubber Styrene-butadiene rubber is a copolymer of butadiene and styrene. The elastic properties of styrene-butadiene vulcanizates are not inferior to their properties elastic vulcanizates of natural rubber. However, SBR vulcanizates show greater resistance to: ozone, atmospheric factors, elevated temperature, they are also resistant to abrasion. SBR rubber is mainly used for the production of car tires, shoe soles and products exposed to abrasion.

Temperature from -50°C to +100°C

Resistant to:

✔	inorganic acids and alkalines
✔	water
✔	alcohols

Sensitive to:

✘	mineral oils and greases
✘	gasoline
✘	brake fluids

Materials parameters table Click to open table