| |
ADVANTAGES |
LIMITATIONS |
|
NITRILE
RUBBER
(NBR)
物性表 |
 Good
oil and fuel resistance.
Good
heat resistance up to 120℃
in oil.
High
tensile strength.
Low
swelling in water. |
Poor
weather and ozone resistance.
Poor
resistance against polar fluids.
Poor
resistance against chlorinated hydrocarbon.
Poor
resistance against aromatic fluids |
|
POLYACRYLATE
RUBBER
(ACM)
物性表 |
Good
oil and fuels resistance.
Good
heat resistance p to 150℃
in oil.
Good
weather and ozone resistance. |
Not
usable in contact with water and water solutions
Limited
cold flexibility.
Limited
tensile strength and tear resistance.
Poor
wear resistance.
Poor
resistance against polar and aromatic and chlorinated
hydrocarbons. |
|
SILICONE
RUBBER
(MVQ)
物性表 |
Good
heat resistance up to 180℃.
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. |
|
FLUORINATED
RUBBER
(FPM)
物性表 |
Good
heat resistance up to 200℃
The
resistance against oil and fuels is better than other types.
The
only highly elastic rubber which is resistant to aromatic and
chlorinated hydrocarbons.
Excellent
heat resistance.
Excellent
weather and ozone resistance.
Excellent
acid resistance.
Low
swelling in water. |
Limited
cold flexibility.
Limited
tensile and tear strength.
Limited
wear resistance.
High
compression set in hot water.
Poor
resistance to polaric solvents. |
|
In addition to the above sealing elements, EPDM, NEOPRENE,
and FELT are on special request. |
