| 摘要 |
An improved packing member for sealing a joint in a pipeline, comprising a substantially cylindrical inner peripheral portion adapted to closely contact the outer surface of one pipe to be connected with another pipe in a pipe joint member, a substantially cylindrical outer peripheral portion adapted to closely contact the inner surface of the pipe joint member and a generally annular intermediate portion connecting the inner and outer peripheral portions integrally with each other. The intermediate portion is somewhat inwardly inclined from the outer peripheral portion toward the inner peripheral portion to define an outwardly diverging clearance between the packing member and the one pipe which communicates with an annular clearance defined between the pipe joint member and the one pipe at one end of the pipe joint member. A substantial free space is provided within the pipe joint member inwardly of the packing member and encircling the inner end of the one pipe to permit longitudinal displacement of the pipe and angular displacement thereof relative to the other pipe by cooperating with the outwardly diverging clearance of the packing member and the end clearance of the pipe joint member. The packing member is generally made of highly flexible and elastic material. |
