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 6685-01-537-9626
NSN 6130-01-414-4244
NSN 2925-01-604-8984
NSN 6135-01-589-9467
NSN 6650-00-050-0476
NSN 6130-01-178-7503
NSN 5950-00-010-7686
NSN 5996-01-392-7220
NSN 5920-01-290-3771
NSN 5965-00-104-3121
NSN 6130-00-877-5743
NSN 6650-00-819-1165