Seal Materials
|
|||
Designation
|
Commercial Denomination
|
General characteristics |
Typical Application |
NBR
(Acrylic-nitrile butadylene) |
BUNA -N PERBUNAN ELAPRIM
JSR-N |
A synthetic elastomer with good mechanical and thermal properties.
Good resistance to oils. Poor resistance to ozone and atmospheric derivatives. |
Water (max T=+158°F) Air (max T=+194°F)
Mineral oils and their derivates, hydrocarbons, methane, ethane, propane, butane, kerosene oil, fuel oil.. |
EPDM
(Ethylene-propylene-dylene) |
BUNA – AP DUTRAL NORDEL
|
A synthetic elastomer derived from the co-polymerization of ethylene and propylene. Suitable for use with non-phosphoric based hydraulic fluids(hold). Water and steam to a max. temp. of +284°F. Not suitable for use with mineral based products.(oil, grease , fuel oils and petrol) |
Hot water and steam. Detergents. Potassium and sodium solutions. Hydraulic fluids. Polarised solvents. * |
FPM
(Fluorocarbon) |
VITON
TECNOFLON FLUOREL |
A sysnthetic elastomer derived from fluirine-propylene. Excellent resistance to the high temp. Excellent resistance to ozone, oxygen, mineral oils, synthetic hydraulic oil, petrol, hydro-carbons and many other chemical agents. Not suitable for use with superheated steam. | For general use up to +284°F |
PTFE
(Polytetra- fuorethylene) |
TEFLON
|
Thermoplastic material used also filled with a mineral resin. Excellent resistance to many chemicals. Optimum high temp. resistance. Poor charpy, improved by adding mineral filling. | For general use up to +356°F |
*Warning: Don’t use with mineral oils and fats | |||