Flexible rubber joints to resist the harsh media and environment, must have targeted properties, such as NBR as a copolymer butadiene and propylene, the biggest feature is the good performance of gasoline and aliphatic oil Good heat resistance and air tightness, good wear resistance and water resistance, the shortage is poor cold resistance, the use of temperature range in-30 °C ~ 100 °C, mainly used in oil-resistant products.
Ethylene propylene rubber, commonly ethylene propylene polymer, can be divided into two ethylene propylene diene and ethylene propylene diene, as the first of the general rubber, in the ozone, ultraviolet, weather and aging have advantages. Acid and Alkali resistance, specific gravity Lin Yu Ting high filling, the highest heat resistance can reach 150 °c, the disadvantage is poor self-adhesion, not easy to stick.
Silicone rubber main chain containing silicon atoms, stable performance, can withstand high temperature and low temperature, is one of the best resistance to large temperature difference rubber joint raw materials, good thermal oxidation and ozone stability, chemical inertness. Disadvantages are also due to the existence of Silicon, low mechanical strength, oil resistance, and acid-base resistance, difficult to vulcanization, price is not cheap, general use temperature in-60 °C ~ 200 °C.
FLUORORUBBER FPM fluorinated monomer copolymerization of organic elasticity, high temperature resistance can also have reached as much as 200 °C, acid, Alkali, oil and other chemical corrosion resistance performance is the best, the comprehensive performance is extremely outstanding, the drawback is expensive, poor reprocessing, poor cold resistance. Generally used in defense manufacturing, and rubber joint with Lining Teflon rubber joint.
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