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 5998-00-701-3487
NSN 5935-01-057-8874
NSN 5990-00-201-1162
NSN 6610-01-005-9173
NSN 5855-01-069-4742
NSN 6645-01-227-2036
NSN 7035-00-270-5519
NSN 6130-01-142-2698
NSN 5999-01-456-7629
NSN 5996-00-908-7932
NSN 5975-01-207-2309
NSN 6110-01-177-3697