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 6145-01-099-9114
NSN 6645-01-425-1673
NSN 5935-01-271-1761
NSN 6320-00-468-8421
NSN 5945-00-930-1490
NSN 5965-01-441-9505
NSN 6650-01-422-1037
NSN 6650-01-633-2430
NSN 6650-01-579-7240
NSN 6320-01-648-5538
NSN 5998-01-249-3057
NSN 7035-01-387-0338