| 摘要 |
PROBLEM TO BE SOLVED: To install a seal member safely and easily, by forming the seal member with a sheet form connection, and a swelling form seal part provided on the periphery of the connection, and pressing and fixing the connection to the installing part of a sewage lid main body by a pressing plate, as well as installing the seal part to the groove of the sewage lid main body. SOLUTION: A seal member 13 forms a sheet form connection 20 at the part opposing to an installing part 17, while it has a swelling form of seal part 21 opposing to a groove 18 positioning on the outer periphery of the connection 20. While the connection 20 of the seal member 13 is superposed to the installing part 17 of a sewage lid main body 12, the seal part 21 is pressed in and installed to the groove 18, and furthermore, a pressing plate 14 is superposed to the connection 20, and the seal member 13 is to be installed to the sewage lid main body 12 by a bolt 15 and a nut 16 to be the fixing means penetrating a hole 22. Consequently, the seal member 13 can be held securely to the groove 18, as well as the connecting and disconnecting works of the seal member 13 can be carried out easily. |
