Short description of materials

Polyacrilate rubber (ACM)

Advantages: Good oil and fuels resistance; temperature range from -40°C to +250°C; excellent resistance to hot oils; good weather, oxidative and ozone resistance; resistance to motor oils, gearbox oils, lubricants, etc.;

Limitations: Not usable in contact with water and water solutions; limited cold flexibility; limited tensile strength and tear resistance; poor wear resistance; poor resistance against polar and aromatic fluids and chlorinated hydrocarbons.

Acrylnitrile-butadiene rubber (NBR)

Advantages: Good oil and fuel resistance (especially to hydraulic oils), lubricants, fuel and other aliphatic hydrocarbons, acids and lyes; good heat resistance (-20°C to +120°C)  in oil; good resistance to pressure; high tensile strength; low swelling in water.

Limitations: Poor weather and ozone resistance; poor resistance to polar fluids; poor resistance to chlorinated hydrocarbons; poor resistance to aromatic fluids.

Ethylene propylene diene monomer (M-class) rubber EPDM

Advantages: Good heat resistance (-40°C to +150°C); satisfactory compatibility with fireproof hydraulic fluids, ketones, alkalis; excellent resistance to hot water and/or steam; good resistance to low temperatures and cold water; outstanding ozone and weather resistance properties; good resistance to polar substances; excellent electrical insulating properties.

Limitations: Unsatisfactory compatibility with most oils, gasoline, kerosene, aromatic and aliphatic hydrocarbons, halogenated solvents and concentrated acids.

Fluorinated rubber (FPM)

Advantages:  Excellent heat resistance (-30°C to +200°C); superior resistance to oil and fuels as compared to other rubber types; the only highly elastic rubber which is resistant to aromatic and chlorinated hydrocarbons; excellent weather and ozone resistance; excellent acid resistance (to both concentrated and diluted acids); good resistance to weak alkalis; low swelling in water.

Limitations: Limited cold flexibility; limited tensile and tear strength; limited wear resistance; high compression set in hot water; poor resistance to polar solvents.

Polyurethane rubber (PU)

Advantages: Good mechanical properties at temperatures ranging from -30°C to +125°C; excellent resistance to wear and tear; strong elasticity retained even at low temperatures; low gas permeability; good resistance to hydrocarbon fuels and petroleum oils; excellent resistance to oxygen and ozone.

Limitations: Poor resistance to water; poor high temperature capabilities.

Silicone rubber (MVQ)

Advantages: Wide temperature range (-55°C to +200°C), although not applicable to usage in hot water and/or steam; best cold resistance of all rubber types; excellent weather and ozone resistance.

Limitations: Poor tensile and tear strength; poor wear resistance; sensitive to hydrolysis; poor resistance to aromatic oils and oxidized mineral oils; poor diffusion resistance.