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 5905-01-320-2491
NSN 5990-00-900-0672
NSN 5975-01-613-3070
NSN 6220-00-057-8451
NSN 5999-01-406-3952
NSN 5960-01-201-5804
NSN 6610-01-067-4359
NSN 5960-01-429-5897
NSN 6220-01-471-6339
NSN 5999-01-170-2207
NSN 5835-00-422-1441
NSN 2925-01-201-3043