Use parameters: maximum pressure :0-300MPa maximum temperature: -55-250 degrees line speed: ≤ 15m / s Applicable medium: hydraulic oil, gas, water, mud, crude oil, emulsion, water - glycol, acid structural features : O-ring sealing performance, high working life, the dynamic pressure sealing work life is 5-10 times higher than conventional rubber sealing products, up to dozens of times, and under certain conditions the seal matrix with life. High wear-resistant sealing surface wear and has the compensation function automatically flexibility. Good self-lubricating properties. Can be used for non-oil lubrication sealed. The structure is simple, easy to install.