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 5930-01-512-1089
NSN 5925-01-101-3386
NSN 5895-00-968-1488
NSN 5945-01-108-1490
NSN 6685-01-658-3831
NSN 6130-01-425-1231
NSN 5998-00-801-1894
NSN 4140-01-502-1370
NSN 5945-01-505-6819
NSN 5960-01-115-4088
NSN 5945-01-566-0471
NSN 5835-00-484-1529