Natural rubber O-ring has good wear resistance, elasticity, breaking strength and elongation. But it is easy to ageing in air, viscous when heated, easy to expand and dissolve in mineral oil or gasoline, alkali-resistant but not strong acid-resistant.
Suitable for use in automobile brake oil, ethanol and other liquids with hydroxide ions. Generally, the temperature range is -20~100 ℃。
Natural rubber O-ring still plays a good sealing and shock absorption role in oil resistance, acid-base, grinding, chemical erosion and other environments.
Therefore, it is the most widely used seal in hydraulic and pneumatic transmission system.