Abstract
This work presents the materials of experimental studies of the mechanisms of destruction of stationary rubber ring seals at high temperatures in two gaseous media: air and nitrogen. It is established that the main causes of failure of stationary ring radial seals at high temperatures and pressures are damage accumulation processes. Seals operating in aggressive gas environments accumulate microcracks, which leads to the formation of macrocracks on the surface of the seal. For seals operating in an inert gas environment, the main process that causes a failure of the seal is the process of changing the shape of the seal as a result of microstrains. This work also describes the design of the stand for long life tests of stationary radial seals in various gas environments at pressures up to 250 atm and temperatures up to 300 ℃. The results of life tests of radial ring seals for air and nitrogen are presented, depending on the pressure of the gas medium in the working chamber.
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