Imports of high temperature o-ring is usually used when you want to try to use a large cross-section of the O-ring. In the case of the same gap. Volumetric heat o-ring to be squeezed into the gap should be less than it is to squeeze the maximum allowable value. Different types of fixed or dynamic sealing applications seals, o-ring sealing element provides designers with an effective and economical. o-ring sealing element is a two-way action. Initial installation of radial or axial compression aspects, o-ring itself imparting an initial sealing capability. The sealing force generated by the system pressure and the total synthesis of the initial sealing force of the sealing force, with which to improve the system pressure increases. o-ring seal in a static situation, showing a prominent role. However, in the appropriate forum in a dynamic, o-rings are often used, but it is limited by the speed of the seal and pressure. Performance O-rings: Select O-ring seal material for their performance and service life of great significance. Properties of materials directly affects the performance of high temperature o-rings. In addition to the general requirements should have an outer ring material, O-ring must pay attention to the following conditions: (1) flexible and resilient; (2) the appropriate mechanical strength, including the expansion of strength, elongation and tear strength and the like. (3) stable in medium hard to become swollen, heat shrinkage effect (Joule effect) is small. (4) easy processing, and can maintain precise dimensions. (5) does not corrode the contact surface, do not pollute the media. Satisfying the above requirements the most suitable and most commonly used material is rubber, so high temperature most o-ring made of a rubber material. Many varieties of rubber, rubber and there are always new varieties appear, the design and selection, you should understand the characteristics of a variety of rubber, a reasonable choice. Features characteristic of O-rings: Technical data Pressure speed: maximum static occasions reciprocating speed up 0.5m / s when no ring, the maximum pressure reached maximum rotational speed of up 20mpa 2.0m / s have ring, the largest up 40mpa medium pressure and temperature: when there is a special ring, the maximum pressure is reached 200mpa see "rubber seal material characteristics table" maximum dynamic pressure compression: When no ring, reciprocating up 5mpa static sealing: o-ring diameter 20% of the time ring, high pressure dynamic seals: 30% import high temperature o-ring diameter