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 4140-00-862-5644
NSN 5990-01-120-1910
NSN 5935-01-256-7327
NSN 6685-00-920-3457
NSN 6620-01-106-3553
NSN 5835-01-459-8664
NSN 6620-01-502-1656
NSN 5965-01-522-0404
NSN 5965-01-199-7235
NSN 5985-00-407-2550
NSN 5965-01-064-7496
NSN 6150-01-047-0662