| 摘要 |
PROBLEM TO BE SOLVED: To maintain a stable seal condition over a long period between a corrugated pipe and a cylinder member, by providing an annular part, having a shoulder contact surface abutting to both side protruded shoulder surfaces in an external peripheral wave mountain recessed part of the corrugated pipe and an outer surface abutting to an internal peripheral surface of the cylinder member, and a connection part connecting these mating annular parts. SOLUTION: A seal packing 10 for a corrugated pipe, mounted between a cylinder member and a corrugated pipe, is provided with an annular part 14 having a shoulder contact surface 13 abutting to both shoulder parts in a wave mountain protruded part of the corrugated pipe, the these mating annular parts 14 are connected to each other in a connection part 15. When the seal packing 10 in a condition mounted in the corrugated pipe is inserted in a cylinder member internal peripheral surface, an outer surface of the seal packing 10 is compressed by abutting to the internal peripheral surface of the cylinder member. In this way, the packing 10, by elastic restoration force due to proper elastic deformation, gives compressive force to the internal peripheral surface of the cylinder member and both the shoulder parts in the wave mountain protruded part of the corrugated pipe, and stable seal performance is obtained by ensuring a life of the seal packing 10 over a long period.
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