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 5965-00-492-1737
NSN 5920-01-526-1842
NSN 6220-00-064-6300
NSN 6610-00-111-3159
NSN 6150-01-512-0391
NSN 6110-01-057-6445
NSN 4140-00-453-3818
NSN 5998-01-559-9748
NSN 7035-00-574-4223
NSN 5999-01-615-5254
NSN 5985-00-897-1692
NSN 5975-00-189-7849