A-A-55549, COMMERCIAL ITEM DESCRIPTION: PACKING, PREFORMED, ROUND (FOR USE WITH WAVEGUIDE FLANGES) (11 JUN 1990)

A-A-55549, COMMERCIAL ITEM DESCRIPTION: PACKING, PREFORMED, ROUND (FOR USE WITH WAVEGUIDE FLANGES) (11 JUN 1990)., This commercial item description (CID) depicts the requirements for round preformed packing. (for use with waveguide flanges).