Mitsubishi Cable Industries, Ltd.

Satoshi Toudou

Kazuyuki Kashihara

In an attachment structure for an annular metal seal, an annular metal seal includes a seal body configured such that at least one of outer corner portions thereof corresponding to an inner corner portion of the seal groove has a sharp ridge, and in a state where a positioning ring is held between an inner-side side surface of the seal groove and an inner-diameter-side side surface or an outer-diameter-side side surface of the seal body, the annular metal seal is fitted in the seal groove with the positioning ring abutted on at least a portion of the inner-side side surface of the seal groove and the sharp ridge of the seal body spaced from the inner corner portion of the seal groove, and the first member and the second member are fastened with each other, so that inner and an outer sides of the annular metal seal are sealed.

Annular metal seal, attachment structure for annular metal seal, and attachment method for annular metal seal

The metal seal has a middle base portionof which cross-sectional configuration is laterally long rectangular, a first main convex portionand a first auxiliary convex portion, and a second main convex portionand a second auxiliary convex portionrespectively disposed on both ends of long sidesA of the middle base portion. Ridge lines of the convex portions, andform common straight lines Land Lcontinuous to short sides of the rectangular.

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Arida, Japan

Satoshi Toudou