| 摘要 |
<p>A coupling device that provides a rain tight seal at the connection with a conduit includes a tubular casing, a nut, a compression ring and a sealing ring. Each of the tubular casing and nut has threading that correspondingly engages each other. The compression ring has a body with a U-shape cross section and substantially parallel fingers on opposite ends of the body that overlap to form a circular structure. The sealing ring is positioned either adjacent or nests concentrically within the compression ring. The sealing ring and compression ring are positioned between the tubular casing and the nut such that a rain tight seal is provided at the connection when the nut and tubular casing are tightly engaged.</p> |
