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 6150-01-021-8289
NSN 6620-01-004-7072
NSN 5920-01-392-6383
NSN 6610-00-124-2876
NSN 6145-01-150-1557
NSN 6620-01-642-7219
NSN 2925-01-210-6531
NSN 5895-01-228-3445
NSN 6110-01-295-5322
NSN 5975-01-236-5722
NSN 5990-01-198-6336
NSN 5998-00-161-2810