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