REINFORCED SEALING GASKET (VERSIONS) Russian patent published in 2000 - IPC

FIELD: sealing technology; manufacture of gaskets for sealing joints in internal combustion engines; cylinder heads and joints between fixed surfaces; power engineering; chemical and petrochemical industries; shipbuilding. SUBSTANCE: reinforced sealing gasket is made from sealing material includes sheets of sealing material which are secured by perforations on perforated metal skeleton. Perforations have form of circle or squares. Perforation serration has similar height at angle of inclination of no more than 90 deg to ensure bend to opposite sides from center of hole. Distance between perforations in longitudinal and transversal directions is no less than size of hole. According to one version, perforations of sealing gasket have form of rectangle at relationship of sizes of lesser and larger sides ensuring preset breaking strength of skeleton in longitudinal and transversal directions which is necessary for keeping the gasket intact. Perforation serration has preset ratio of height for keeping the gasket intact at angle of inclination not exceeding 90 deg, thus ensuring bend of serration of sides opposite from center of hole. Distance between perforations in longitudinal and transversal directions is no less than size of hole. EFFECT: enhanced tightness of seal. 3 cl, 4 dwg