Fluoride rubbers

Fluoride rubber (FPM)
Fluoride rubber has good tolerance to mineral oils, alifatic and aromatic carbonhydrogens, diluted acids, ozone, fuels and other solvents. Fluoride rubber has excellent heat resistance (up to +200 °C) and cold tolerance (up to -25°C / -40 °C depending on the FPM –type used). Good mechanical attributes and resistance to decay makes FPM rubber a good choice in comparison to other synthetic rubbers.

Viton®Extreme ETP (FEPM)
Viton Extreme exceeds even fluoride rubbers excellent tolerance to chemical solvents. Customized polymeric structure means Viton Extreme expands minimally in various solvents and alkalines. It’s heat and cold resistance is on level with fluoride rubber. This material should be used in combination with aggressive chemicals that require exceptional resistance qualities from the seal material.
Viton® is a registered trademark of DuPont Performance Elastomers.

Aflas® (FEPM)
Aflas is a specialized rubber that belongs to the new generation of fluoride-elastomeres. Aflas O-rings have exceptional resistance in specialized circumstances and environments such as: hot water, steam, acid, alkaline, bleach, sour gas (H2S), oil and amine and substances with amine content as well as corrosion block, motor oil, gear oil, brake fluid and other acidic substances. Heat resistant qualities are in level with other fluoride rubbers (-10°C – +200°C).
Aflas is a registered trademark of ASAHI GLASS Co Ltd.

Nitrile rubbers
Acrylonitrile Butadiene (NBR)
Commonly known as nitrile rubber, acrylonitrile is best used with motor oils and various hydraulic oils. Nitrile rubber also functions well with lubricants, benzene and other aliphatic carbonhydrogens and alkalic substances. Nitrile rubber has good mechanic qualities and it had good tolerance against wear. Functional thermal range is -25°C – +120°C (In some cases down to -40°C).

Hydrogenated nitrile (HNBR)
Seals made from HNBR have a broad range of application. It has good tolerance to technical oils with additives, low steam and gas penetration and tolerates well both ozone and wear. HNBR seals have a thermal tolerance from -30°C to +150°C.

Silicone rubbers (VMQ/PVMQ)
Silicone rubbers have a broad range of thermal tolerance, with VMQ withstanding from -55°C to +200°C and
PVMQ withstanding temperatures from -100°C to +200°C. However silicon rubber does not function well in an environment with hot water or steam. Though silicone rubber stands up to NBR in oil tolerance, it cannot compete with the former’s physical and mechanical attributes.

Fluorsilicone rubber (FVMQ)
In comparison to regular silicone rubber, fluorsilicone has excellent resistance to oils, fuels and solvents – in particular to aromatic and chlorinated carbonhydrogens and alcohol. Fluorsilicone rubber is a good choice for situations where a broad range of heat resistance (from -60°C to +200°C)is required and where the seal comes into contact with aggressive substances such as gasoline, various alcohol solutions, aromatic oils and chlorinated solvents.

Ethylene propylene diene rubber (EPDM)
This rubber is recommended when resistance to hot water and steam is required. EPDM is also durable to wear and resistant to ozone. In comparison to synthetic rubbers, EPDM has better cold resistance. Its behavior with oils, lubricants and solvents is similar to styrene-buradiene rubber (SBR). EPDM is also resistant to chemicals and oxidizers. Thermal resistance ranges from -50°C to +150°C depending on the type of EPDM used.

Chloroprene rubber
Chloroprene rubber (CR) is similar in attributes to NBR. It’s resistance to mineral oil is slightly lower but Chloroprene rubber has excellent resistance to wear, ozone and acidic and alkaline solvents. Thermal resistance ranges from -40°C to +120°C depending on the type of EPDM used.