本文叙述一种新的油封原理,这种原理已在标准的V型圈上应用,其唇部穿有一小孔。该小孔的作用是排出从V型圈唇部和唇部滑动的密封表面之间既使有也极少的泄漏。讨论了这种密封的缺点和一些使用建议。前言为了保证具有橡胶环形唇的油封使用满意,必须要满足许多要求。唇部和密封表面必须加工良好。唇部对密封表面的单位压力必须保持在较小范围内。压力太大将会引起高的摩擦阻力和破坏唇部和密封表面之间的油膜的危险,从而产生干摩擦,不正常的磨损和热扩张。唇部的单位压力也不能太低,因为由于油膜太厚,表面张力不足以维持油留在唇部和密封表 This article describes a new oil seal principle that has been applied to standard V-rings with a small hole in the lip. The function of the small hole is to exhaust even a small amount of leakage between the V-ring lip and the sealing surface sliding on the lip. Discussed the shortcomings of this seal and some suggestions for use. Foreword In order to ensure that the oil seal with a rubber ring lip is satisfactory for use, many requirements must be met. The lip and the sealing surface must be machined well. The unit pressure of the lip against the sealing surface must be kept within a small range. Too much pressure will cause high frictional drag and damage the oil film between the lip and the sealing surface, resulting in dry friction, abnormal wear and thermal expansion. Unit lip pressure should not be too low, because the film is too thick, the surface tension is not enough to maintain oil in the lip and seal table