1. Natural rubber sealing strip: applicable temperature is -50~120℃; it is characterized by good elasticity and low temperature performance, but poor high temperature performance, poor oil resistance, and easy to age in the air.
     2. Styrene-butadiene rubber sealing strip: applicable temperature is -30~120℃; it is characterized by resistance to animal and vegetable oils, but swelling to general mineral oil, strong aging resistance, and better wear resistance than natural rubber sealing strips.
     3. Nitrile rubber sealing strip: applicable temperature is -30~120℃; it is characterized by good oil resistance, abrasion resistance, and aging resistance, but it is not suitable for phosphate ester hydraulic oil machinery.
     4. Silicone rubber sealing strip: applicable temperature is -20~120℃; it is characterized by resistance to fuel oil, gasoline and mineral oil, high content, good oil resistance, but poor cold resistance.
     5. Ethylene propylene rubber sealing strip: applicable temperature is -50~150℃; heat resistance, cold resistance, aging resistance, ozone resistance, acid and alkali resistance, good wear resistance, but not resistant to general mineral oil-based lubricants and hydraulics oil.