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 6135-01-391-6515
NSN 6105-01-381-2496
NSN 5975-00-964-9064
NSN 6320-01-607-1491
NSN 2925-01-535-3167
NSN 5895-01-655-4363
NSN 6110-01-410-5076
NSN 5965-00-590-7995
NSN 6135-00-450-3528
NSN 5975-00-525-9196
NSN 6650-01-170-1287
NSN 6110-01-395-6574