| 摘要 |
PURPOSE:To enhance the sealability by providing an annular tongue-like piece on the inner surface of a seal body section and an annular press-contact piece on the outer surface thereof. CONSTITUTION:An annular tongue-like piece 12 is integrally incorporated with one end part of a receiving opening part 21 of a seal body section 11 on the opening 21 side, and an annular press-contact piece 14 is provided on the outer peripheral surface of the center part of the seal body section 11. With this arrangement, it is possible to facilitate the insertion of the inserting part 31 of a connecting pipe 30 due to a slight gap between the tongue-like piece 12 and the seal body section 11. Further, the inner peripheral surface of the tongue- like piece 12 is made into close contact with the outer peripheral surface of the insertion section 31 over the entire area thereof, thereby it is possible enhance the sealability. |
