SEALING DEVICE Russian patent published in 2009 - IPC F16J15/12 

FIELD: machine building.

SUBSTANCE: invention relates to sealing technique. Sealing device, particularly for flat flange joints with ring-shaped metallic basis and bushings from soft material from both sides, preferably from graphite or polytetrafluoroethylene. Basis allows radial-circular annular teeth, which are in assembled form provides linear metallic contact. Metallic basis allows thickness less than 0.5 mm, preferably less than 0.49 mm, and particularly preferably less than 0.3 mm. Basis contains, at least, one annular tooth also in area of bushings from soft material and sealing device allows centring ring with crimped or toothed cross section. Bumps or teeth of centering rings allow height less than annular teeth have. There are described options of sealing devices.

EFFECT: invention increases airtightness reliability.

37 cl, 13 dwg