A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5910-01-232-6462
NSN 5975-01-598-7665
NSN 5996-01-104-7884
NSN 4140-01-416-0668
NSN 6220-01-634-0660
NSN 5835-01-063-6284
NSN 5835-01-017-0958
NSN 5935-00-372-5261
NSN 2925-01-499-4802
NSN 5915-00-099-0347
NSN 5998-00-271-1555
NSN 5960-01-129-7447