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 5905-01-395-2904
NSN 5975-01-308-7020
NSN 5999-01-449-1955
NSN 5999-01-488-6643
NSN 5996-00-597-2234
NSN 6135-00-166-5984
NSN 5920-01-376-4422
NSN 5975-00-099-9312
NSN 6110-01-432-8264
NSN 5835-00-148-9719
NSN 6150-01-091-0234
NSN 6685-01-508-0805