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 6610-01-188-5215
NSN 6130-01-189-6954
NSN 4140-01-069-2307
NSN 5996-00-260-8291
NSN 5960-00-952-1868
NSN 6645-00-542-1206
NSN 5835-01-426-0069
NSN 6320-01-476-7702
NSN 5945-01-216-0315
NSN 5945-00-980-4972
NSN 6650-00-420-3593
NSN 5985-01-062-0675