FIELD: mechanical engineering. SUBSTANCE: sealing ring of circular section is installed in circular recesses provided on cylindrical parts to be sealed. Female sealed part has an entry chamfer. Groove has a toroidal surface. Circular recess on male sealed part has the form of a circular groove with semitoroidal surface which matches with circular groove having conical surface and forms circular projection constituted by cones with their bases facing each other. Projection is disposed opposite the circular groove on female sealed part. The smallest diameter of groove with conical surface is larger than the smallest diameter of matching groove. Sealing ring is made of a flexible material. EFFECT: improved design. 4 dwg
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