Friction and wear is one of the important factors affecting the damage of o-rings.
The size of the degree of wear depends mainly on the friction.
When the fluid pressure, the size of the o-rings friction depends on the amount of precompression it.
When the working fluid under pressure, friction force increases with increasing of the working pressure.
Under the condition of the working pressure is less than 200 kg, had linear relationship approximately.
When the pressure is greater than 200 kg, with the increase of pressure, o-rings which some friction with the increase of contact area on the metal surface have an effect on the application of the o-rings, the increase of friction also gradually slow.
Under normal circumstances, the service life of the o-rings with the increase of liquid pressure will approximate relations of the square.
The increase of friction, makes rotating or reciprocating movement between the shaft and o-rings frictional heat.
Because type O ring is made of rubber, and the thermal conductivity of the o-rings is poor.
Therefore, the frictional heat can cause rubber seals
aging, is the one inducing the inefficiency of o-rings.
Serious friction can quickly cause the surface damage of o-rings, cost reduced the volume of compression sealing.
O-rings friction to a great extent, for the service life of the o-rings is has a great influence, so at the time of application of o-rings friction don't ignore it.
Seal manufacturers to select different materials can meet the different high and low temperature resistance, high and low pressure resistance, abrasion resistance, acid and alkali and other chemical medium, corrosion resistance, aging, knight of the oil pressure and fatigue condition of the environment, can according to customer demand design suitable products.
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