Nok Corporation

Yu Yamaguchi

Satoshi Yamanaka

Masamichi Kishiro

Hisato Yonai

Tatsuya Mori

Toshiki Watanabe

Hiromi Sugihara

Takumi Yamada

Toshiaki Yamauchi

A sealing device includes a seal housing disposed between a cylinder and a rod, an inner seal disposed between the rod and the seal housing, the inner seal being in contact with the rod, and an outer seal disposed between the inner seal and the seal housing, the outer seal being in contact with both the inner seal and the seal housing, in which one of the outer seal and the seal housing has a contact face that is in contact with the other of the outer seal and the seal housing, and the contact face has a concave portion.

Sealing device

A sealing device includes a reinforcing ring having annular shape around an axis line 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 line. The elastic body part includes an annular seal lip and an annular side lip that is provided on an outer side of the seal lip and that extends toward the outer side. In an inner peripheral surface of the side lip on an inner periphery side, at least one circumferential groove which is a groove having an annular shape around the axis line is provided and at least one axial groove which is a groove extending along a direction of the axis line is provided. The circumferential groove and the axial groove are connected with each other.

Growing community of inventors

Fukushima, Japan

Yu Yamaguchi