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随着液压技术的发展,要求密封元件的密封性能必须可靠。过去由于密封元件不过关,出现了漏油、漏气和漏水问题。为彻底解决“三漏”问题,我们从1972年开始对聚氨酯Y型密封圈作了系统的研究。从十几毫米的小直径到900毫米的大直径、从低温-28℃到+37℃(油温为40～50℃)、从低压4kgf/cm~2到高压360kgf/cm~2和超高压500～750kgf/cm~2等条件下都进行了大量的试验验证与试用工作。
With the development of hydraulic technology, the sealing performance of the sealing element must be reliable. In the past due to the sealing element does not pass, there has been leakage, leakage and leakage problems. In order to completely solve the “three leaks” problem, we have made a systematic study on polyurethane Y-ring since 1972. From a small diameter of ten millimeters to a large diameter of 900 millimeters from a low temperature of -28 ° C to a temperature of +37 ° C (oil temperature of 40 to 50 ° C), from a low pressure of 4 kgf / cm 2 to a high pressure of 360 kgf / cm 2 and an ultrahigh pressure 500 ~ 750kgf / cm ~ 2 and other conditions have carried out a large number of experimental verification and trial work.