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 5835-01-263-1293
NSN 6610-01-207-0045
NSN 5925-01-384-3234
NSN 5990-01-334-6416
NSN 5920-01-133-3759
NSN 5895-01-058-1900
NSN 5835-01-319-0262
NSN 6105-01-453-8794
NSN 6645-01-422-5686
NSN 4140-00-470-0530
NSN 5998-01-641-5869
NSN 6620-00-635-7347