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 6240-01-582-3790
NSN 5855-01-248-5725
NSN 6150-00-530-3046
NSN 6645-01-188-0213
NSN 5998-01-471-8298
NSN 6220-01-076-4383
NSN 5855-01-100-3272
NSN 5915-01-026-0457
NSN 4140-00-435-5607
NSN 5996-01-047-4202
NSN 5965-00-815-2525
NSN 6135-00-767-0331