Eagle Industry Co., Ltd.

Joji Watanabe

Atsushi Kaneko

Koji Akiyama

Yoji Oshii

A mechanical seal device for obtaining appropriate sliding properties under any conditions, such as a pressure of seal is low or high. Both first groovesand second groovesare formed on a sliding faceof a stationary ring. The first grooves which are not in communication externally and act for reducing contact resistance of a sliding face by a dynamic pressure action when a rotary shaft rotates, the second grooves act for reducing the contact resistance of the sliding face constantly by introducing a pressure from external. Thus, a mechanical seal device which is available to seal sealed fluid under an appropriate dry contact status wherein a sliding face load is reduced in any condition can be provided.

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Tokyo, Japan

Joji Watanabe