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 5905-01-178-8949
NSN 5960-01-391-4701
NSN 5998-01-492-9899
NSN 5910-01-401-5279
NSN 5965-01-449-1101
NSN 5905-00-260-5008
NSN 6685-01-305-0021
NSN 5895-01-066-1684
NSN 6220-00-539-0095
NSN 5905-01-415-5116
NSN 6220-01-506-7189
NSN 6320-01-445-5893