EPDM (ethylene propylene diene rubber)

Properties:

• Excellent resistance to ozone, UV and weathering
• High flexibility even at low temperatures (-50°C to +150°C)
• Good chemical resistance, but not resistant to oils/fuels

Applications:

• Seals for windows, doors, facades
• Water and sewage systems

Approvals for:

• FDA, KTW, WRAS, NSF

Recycling:

• Mechanical recycling possible, limited thermal utilisation

NBR (nitrile rubber) & HNBR (hydrogenated NBR)

Properties:

• Very good resistance to oil, grease and fuel
• Temperature range: -30°C to +120°C (HNBR up to +150°C)
• NBR less weather-resistant, HNBR improved through hydrogenation

Applications:

• Fuel lines, O-rings, hydraulic seals

Approvals for use:

• FDA (special types)

Recycling:

• Mechanically limited possible

FKM (fluoroelastomer, Viton®) & FFKM (perfluoroelastomer)

Properties:

• Excellent temperature and chemical resistance
• FKM up to +250°C, FFKM up to +320°C
• Very resistant to oils, fuels and acids

Applications:

• Chemical industry, high-temperature seals

Approvals:

• FDA, USP Class VI (certain types only)

Recycling:

• Very difficult, thermal utilisation preferred

CR (chloroprene rubber, Neoprene®)

Properties:

• Good oil and weather resistance
• Mechanically robust, temperature range: -40°C to +120°C

Applications:

• Hoses, rubber seals

Recycling:

• Mechanical recycling possible