Materials
Rubber compounds are mixed in our rubber compounding shop. Every rubber batch goes to laboratory for physical testing. We can develop a compound for customer requirement or seal application.
We are sophisticated in shaft seals compounds design for friction and dynamic application.
MATERIALS INCLUDE
Nitrile Rubber (NBR)
This elastomer is a copolymer of butadiene and acrylonitrile and is used for the majority of conventional fluid sealing application.
- Temperature range:
- from -57°C to +120°C
- Advantages:
- good resistance to mineral oil and grease
 good resistance to water and radiator fluid
- Limitations:
- poor resistance to high-alloyed hypoid oil
 poor resistance to ozone, weathering and sunlight
 not resistant to automotive brake fluid (glycol based)
 poor resistance to polar fluids (ketones, ethers, esters)
 poor resistance to chlorinated hydrocarbons (carbon tetrachloride, trichloroethylene)
 poor resistance to aromatic solvents
Polyacrylic Rubber (ACM)
- Temperature range:
- from -25°C to +150°C
- Advantages:
- good resistance to oils and fuels
 good resistance to ozone and weathering
- Limitations:
- not resistant to water and water solutions
 poor resistance to polar fluids (ketones, ethers, esters)
 poor resistance to chlorinated hydrocarbons (carbon tetrachloride, trichloroethylene)
 poor resistance to aromatic solvents
 limited cold flexibility
 poor wear resistance
Fluorinated Rubber (FKM/FPM)
It has good chemical resistance and is recommended for high temperature applications.
- Temperature range:
- from -45°C to +260°C
- Advantages:
- excellent resistance to mineral oil and above all high-alloyed hypoid oils
 excellent acid resistance
 good resistance to aromatic and chlorinated hydrocarbons
 excellent resistance to ageing, ozone and weathering
- Limitations:
- limited cold flexibility
 poor resistance to polar fluids (ketones, ethers, esters)
Silicone Rubber (MVQ)
- Temperature range:
- from -73°C to +200°C..+300°C
- Advantages:
- retains flexibility down to very low temperatures
 withstands continuous heating at high temperatures without hardening
 resistant to mineral oil and greases
 excellent resistance to ageing, weathering and ozone
 good chemical resistance to alkalis
- Limitations:
- not recommended for use with hydrocarbons such as petrols and paraffin, and lighter mineral oil or steam over 3.5 bar
 not resistant to hot water, acids and non-mineral automotive brake fluids
 poor wear resistance
Chloroprene Rubber (CR)
- Temperature range:
- from -65°C to +120°C
- Advantages:
- excellent resistance to ageing, weathering and ozone
 moderate resistance to mineral oils and greases
- Limitations:
- tends to harden or stiffen at low temperatures
 not resistance to non-mineral automotive brake fluids
Ethylene Propylene Diene Rubber (EPDM)
- Temperature range:
- from -57°C to +150°C
- Advantages:
- excellent resistance to ageing, weathering and ozone
 good resistance to water and steam
 good resistance to automotive brake fluid (glycol based)
 good resistance to polar fluids
- Limitations:
- poor resistance to mineral oil and grease

