PROBLEM TO BE SOLVED: To provide a sealing structure of a three-surface mating part which is simplified but secures a seal line without fail and is capable of obtaining satisfactory sealability of the three-surface mating part in a three-member junction part.;SOLUTION: In a sealing structure of a three-surface mating part in a three-member junction part, regarding a first gasket, an end portion 90 is orthogonally abutted to a seal surface 10a of a second gasket 10 in side end portions 32, 43 of first and second seal object members 3 and 4. A cross section in the end portion of the first gasket on a surface in parallel with uniting surfaces 31, 41 of the first and second seal object members 3 and 4 is chevron-shaped. An apex 90a of the chevron shape is present at a position protruding closer to a third seal object member 2 than the side end portions 32, 43 of the first and second seal object members 3 and 4. A base 90b of the chevron shape is present at a position recessed oppositely to the third seal object member 2 rather than the side end portions 32, 43 of the first and second seal object members 3 and 4.;COPYRIGHT: (C)2014,JPO&INPIT
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