| 摘要 |
A water seal plug for use on an electrical connector, improved to cover a sealing surface such that it can be exposed when the plug is used, so as to protect the sealing surface while ensuring superior sealing effect. The water seal plug has the following portions: a cylindrical plug body having a wire passage bore formed therein and an outer peripheral surface serving as a sealing surface; an annular supporting portion connected to the rear end of the plug body; and a cover sleeve which is connected to the rear end of the plug body through the annular supporting portion, the cover sleeve being extended forwardly from the annular supporting portion so as to cover the sealing surface of the plug body. The cover sleeve is able to be unfolded at the annular supporting portion so as to extend rearward thereby to expose the sealing surface.
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