MATERIAL
|
TEMP
|
ADANTAGES
|
LIMITATION
|
Nitrile Rubbrt
(NBR)
|
-40~125℃
|
■Good oil and fuel resistance
■High tensile strength
■Low swelling in water
|
■Poor weather and ozine resistance
■Poor resistance against polar lkuids
■Poor resistance against clhydrocarbon
■Poor resistance against aromatic fluids
|
Fluorinated Rubber
(FKM)
|
-20~250℃
|
■The resistance against oil and fuels is better than other types
■The only highly elastic rubber whice is resistance to aromatci and chlornated hydrocarbons
■Exccllcent hcat resistance
■Exccllcent weather and ozonc resistance
■Exccllcent acid resistance
■Low swelling in water
|
■Limited cold flexibliity
■Limited tensile and tear strength
■Limited wear resistance
■High compression set in hot water
■Poor resistance to polaric solvents
|
Polyacrylate Rubber
(ACM)
|
-25~150℃
|
■Good oil and fuels resistance
■Good weater and ozone resistance
|
■Not usable in contact with water and water solutions
■Limited cold flexibility
■Limited tensile strength and tear resistance
■Poor wear reisistance
■Poor resistance against polar and aromatic and chlorinared hydrocarhons
|
Silicone Rubber
(VQM)
|
-60~225℃
|
■Best heat resistance of all rubber types
■Excellent low temp resistance of all rubber types ■Excellent weather and ozone resistance |
■Poor tensile and tear strength
■Poor wear resistance
■Sensitive to hydrolysis
■Poor resistance against aromatic oils and oxidized mineral oils
■Poor diffusion resistance
|