| 摘要 |
PURPOSE:To improve the operability for attaching and detaching the tank in the title, and to surely install the tank water-tightly by closing a clearance between a connecting pipe and a communicating pipe by means of the tongue portion of an annular seal ring formed of an elastic material, and having a thick base portion and a thin tongue portion. CONSTITUTION:The base portion 4a of an annular seal ring 4 in which an expanded part is formed on a thin tongue portion is inserted in and fitted on the thick base portion 4a of U-shape opened both end portions made of elastic material such as silicone-rubber and the cross-section of which is expanded outward, inside a recess groove 53 engraved on the outer periphery of a connecting pipe 54 installed adjacent to a liquid tank 51. The tongue portion 4b is expanded outside the outside diameter of the connecting pipe 54 so as to have enough dimension to close a clearance between the connecting pipe 54 and a communicating pipe 57. As the tongue portion 4b is formed thin, the portion is deformed in such a manner as to be squashed along the inner wall surface of the communicating pipe 57, so that the portion closely adhere to the inner wall surface so as to obtain a water-tight action. |
