Such cylinders commonly used in construction machinery and agricultural machinery. There are more than a movement of the piston, the piston when each successive movement, the output speed and output power are changing. ) Cylinder internal leakage. Internal leakage of hydraulic cylinders including hydraulic cylinder seals, rod seals and piston seals and closures were caused by wear and tear such as excessive leakage. _ Texas aerospace hydraulic high-pressure cylinder (Online) _ cylinders provided by the Dezhou City aerospace hydraulic machinery plant. Dezhou City aerospace hydraulic machinery plant (www.sdhtyeya.com) is an industry leader in Shandong Dezhou, hydraulic equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Texas aerospace hydraulic leadership with the staff warmly welcome all inquiries negotiations to create the Texas aerospace hydraulic better future.