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 5999-00-254-8279
NSN 6150-01-200-7935
NSN 5835-01-436-6549
NSN 5985-00-925-1216
NSN 6150-00-589-9900
NSN 6685-01-297-0965
NSN 5855-00-058-1293
NSN 6620-01-305-7924
NSN 5965-01-374-2376
NSN 5920-01-029-1635
NSN 6150-01-245-8701
NSN 6685-01-234-1104