O-ring is a circular shape of the sealing element, it is widely used in a variety of mechanical equipment, in a certain temperature, pressure and different liquid or gas medium to play a sealing effect, Molded O Ring compared with other seals, Has the following superior performance:
①, sealed parts of the structure is simple, Molded O Ring the installation site is compact, and lighter weight.
②, self-sealing effect, often only one seal will be able to complete the sealing effect.
③, good sealing performance, Molded O Ring used as a fixed seal when almost no leakage, used as a sports seal, only when the speed is high when some leakage.
④, movement friction resistance is very small, for the occasion of the pressure can also be adapted.
⑤, size and groove has been standardized, low cost, easy to use, easy to use and outsourcing.
Compared with other seals, there are three problems:
①, starting the frictional resistance.
②, used as a pneumatic device seal, you must add lubricating oil to prevent wear.
③, the coupling parts, such as the movement surface, grooves, Molded O Ring gaps and other processing size and accuracy requirements are very strict.
O-ring in the rubber material standard, the hardness and compression of the two permanent performance of the most important weight. The choice of rubber material with smaller compression deformation is advantageous for sealing performance, Molded O Ring and hardness is critical to O-ring pressure and resistance.