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 5835-00-431-4451
NSN 5855-01-033-1375
NSN 5990-00-658-3953
NSN 2925-00-188-5003
NSN 5855-01-513-9601
NSN 6610-00-903-0714
NSN 6610-00-979-4011
NSN 5905-01-507-8250
NSN 6105-01-317-2434
NSN 6110-01-409-2692
NSN 5965-01-178-2367
NSN 6650-01-044-0183