 Rubber Gaskets are mande by various type of rubbers, through by molding or cutting. According to the different temperature and medium to select the different materials.
RAW MATERIALS SPECIFICATION.:
|
Materials
Characteristic |
NR |
NBR |
CR |
SBR |
EPDM |
MUQ |
VITON |
|
Hardness(Shore A) |
25~99 |
25~95 |
20~95 |
30~90 |
25~95 |
18~80 |
60~90 |
|
Weather resistance |
▲ |
× |
● |
▲ |
★ |
★ |
★ |
|
Ozone resistance |
× |
× |
● |
× |
★ |
★ |
★ |
|
Heat resistance |
× |
▲ |
● |
▲ |
★ |
★ |
★ |
|
Low-tempt. Resistance |
● |
▲ |
● |
▲ |
★ |
★ |
★ |
|
Acid resistance |
■ |
● |
● |
■ |
★ |
★ |
★ |
|
Alkali resistance |
■ |
● |
● |
▲ |
★ |
● |
★ |
|
Mineral oil resistance |
× |
● |
● |
× |
× |
× |
★ |
|
Vegetable oil resistance |
▲ |
★ |
● |
▲ |
● |
● |
★ |
|
Abrasion resistance |
★ |
★ |
● |
★ |
● |
× |
▲ |
|
Tear resistance |
★ |
● |
● |
▲ |
▲ |
▲ |
▲ |
|
Strength characteristic |
★ |
● |
● |
■ |
● |
× |
× |
|
Compression |
★ |
● |
● |
● |
● |
● |
● |
|
Impact resistance |
★ |
● |
● |
★ |
● |
▲ |
▲ |
|
Gas-seal characteristic |
▲ |
▲ |
● |
▲ |
▲ |
× |
× |
|
Flame resistance |
× |
▲ |
● |
× |
× |
▲ |
★ |
|
Electrical characteristic |
● |
× |
× |
▲ |
★ |
★ |
★ |
|
Color stability |
● |
■ |
× |
● |
★ |
★ |
● |
|
Tackiness |
★ |
● |
● |
▲ |
▲ |
● |
★ |
|
Process-ability |
★ |
● |
▲ |
● |
● |
★ |
● |
|
Water resistance |
★ |
● |
● |
● |
★ |
● |
★ |
★Excellent ●Good ■Suitable ▲Poor ×Unacceptable |
