Material

Coad

Hardness(Shore A)

Temperature

Applicable occasions

Natural rubber 

NR

60±5

-50~80

Inorganic salts, ammonia water, weak acid and alkali, etc

Neoprene

CR

70±5

-20~100

Brine, ordinary refrigerant, carbon dioxide, non oxidizing dilute acid, alkali, etc

Nitrile rubber

NBR

70±5

-20~120

Hydraulic oil, inorganic and animal and plant oil, hot water, fuel, oil, dilute acid, alkali and salt solution at low temperature, etc

Fluororubber

FKM

70±5

-50~250

Hot oil, chemicals, vegetable oil and grease, gas, fuel, ozone, steam, hot water, air, dilute acid, etc

EPDM

EPDM

70±5

-30~140

Water, alcohol, have oxygen alkyl diol, ketone, silicon oil and grease, weak acid, etc

silicon rubber

SI

60±5

-40~150

Hot air, oxygen, brake oil, water, excluding oil, dilute salt solution, ozone, etc