Patent ID: 7490868

Claim:
A pipe mating swivel adapter comprising: a first disk and a second disk insertable between a first flanged pipe segment and a second flanged pipe segment, unattached to either segment, designed to be held between said segments only by the pressure of fastened flange bolts, with no flange bolt passing through any part of either disk, wherein: (i) the first disk has an inner surface having a frustospherical protrusion with a groove configured to receive an O ring to circumscribe a portion of the protrusion and having an outer surface designed to abut the first flanged segment; (ii) the second disk has an inner surface having a frustospherical depression designed to mate with the frustospherical protrusion of the first disk and having an outer surface designed to abut the second flanged segment; and (iii) the first and second disks may be swiveled and rotated against each other to achieve a seal.