Importance

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Abstract

A sealing device comprises two substantially conical or cylindrical sealing surfaces (6, 8) which are axially introducable one into the other to a substantially concentric sealing position in which the sealing surfaces define between themselves an annular sealing space (12) and further comprising a sealing element (10) consisting of elastic material, the sealing element being compressed in the sealing space between the sealing surfaces and being at least in axial direction bound to a first sealing surface of said sealing surfaces. The second sealing surface (8) is formed with at least one projection (16) and the sealing element forms in cooperation with said first sealing surface at least one pair of portions (20, 22) positioned adjacent each other in the axial direction and presenting different compression resistances under the influence of the projection of the second sealing surface. The projection (16) cooperates in the sealing position with the portion (20) of the sealing element having the smallest compression resistance, and the portion (22) of the sealing element having the greatest compression resistance is in the direction of introduction of the sealing surfaces one into the other positioned in front of the portion having the smallest compression resistance, so that the projection and the sealing element cooperate so as to provide a resistance against axial displacement of the sealing surfaces from the sealing position. (FIG. 1)

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First Claim