Use parameters: maximum temperature: 600 ° C maximum line speed: 10m / s for the fluid: steam, water, oil, weak acid, gas, and other structural features: sealed stack ring as special products, the use of the structure tensioner to sealing function, the multiple use of the characteristics of another labyrinth seal. Therefore, the sealing is very stable. It is mainly used for sealed bearings and other adverse conditions such as high temperature, corrosion, used to improve the harsh environment in order to reduce the high fuel consumption and improve the condition of bearings. In the sealed areas of the field, before the seal not suited to the medium of the many types of problems, from the stack ring to find the answers, including machinery and equipment, automotive and other assembly CONVERTED or stationary seal part. Sealing ring wide application aspect of the success of, for example: the roll manufacturer, the engine discharge pipe, the bearings of the rotary table, caster, transmission, generator sets, as well as other aspects, is the normal sealing generation alternatives.