| CPC F16J 15/125 (2013.01) [F16J 15/104 (2013.01)] | 7 Claims |
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1. A sealing structure comprising an attachment space that is an annular space around an axis formed by a plurality of members and a sealing device for sealing the attachment space, wherein:
an engagement portion is formed between the attachment space and the sealing device;
the engagement portion includes a recessed engagement part that is a part formed in the attachment space, the recessed engagement part being recessed to an outer periphery side and a protruding engagement part that is a part formed in the sealing device so as to be housed in the recessed engagement part, the protruding engagement part projecting to the outer periphery side;
the sealing device comprises a reinforcing ring having an annular shape around the axis and an elastic body part formed from an elastic body, the elastic body part being attached to the reinforcing ring and having an annular shape around the axis;
the elastic body part includes a seal lip that is an annular portion projecting toward one side in a direction of the axis and a secondary lip portion that is an annular portion projecting toward another side in the direction of the axis;
the seal lip is located closer to the axis in the radial direction than the secondary lip portion; and
the plurality of members comprises a first member and a second member,
wherein the first member has a first surface provided at an opening end of the recessed engagement part and extending radially outward of the recessed engagement part,
wherein the second member has a second surface facing the first surface in the direction of the axis, and
wherein the protruding engagement part is housed in the recessed engagement part such that a terminal end of the protruding engagement part is positioned radially inwardly of an innermost position at which the first surface and the second surface oppose each other.
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