watertight seal meaning in English

不透水的密封垫
不透水密封垫
止水

There are a variety of causes that may bring up uncomfortable usage , traffic jam , even malfunction of glass lifer , such as bad stamping part of doors , bad tolerance with inner / outer watertight seal and dimension and material of window guide - slot , problems with regulator itself , as well as unconformity of window glass application and its design specification
引起车门玻璃升降器失效的原因很多，其中车门冲压件不规范，车门内外玻璃挡水胶条及玻璃导槽的尺寸形状及材质存在偏差，车门玻璃升降器本身存在问题，以及车门玻璃与设计要求不符等等都是导致车门玻璃升降不畅，卡滞，甚至失效的重要原因。