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 6685-01-241-2325
NSN 5910-00-252-4853
NSN 5960-00-047-3944
NSN 5920-00-819-8577
NSN 5945-01-648-4156
NSN 5910-01-025-6563
NSN 5905-00-679-2343
NSN 5835-00-005-7909
NSN 5975-01-432-0234
NSN 2925-00-373-8837
NSN 6650-01-604-6246
NSN 5998-01-175-0796