| 摘要 |
PURPOSE:To prevent a leak of infiltration through a fine clearance formed in a lap winding part, also to generate sufficient deformation even by low tightening so that a sure seal property can be displayed, in addition to improve a follow-up property relating to wearing so that high seal performance can be ensured over a long period. CONSTITUTION:At least in an axial direction one end surface of a die mold packing part 1 formed by die mold in a ring shape by lap-winding an expansion graphite tape 1a wound in a spiral shape and further at least in one of inner/ outer end parts in a diametric direction, ring-shaped dam parts 2, 3, protruded toward the axial direction outward, are integrally formed. Simultaneously, in the axial direction end surface of the die mold packing part 1 except these ring-shaped dam parts 2, 3, ring-shaped seal materials 4, 5 are adhesively arranged so as to protrude the ring-shaped dam parts 2, 3 in the axial direction from external surfaces of these ring-shaped seal materials. |
