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 6220-01-099-6581
NSN 7035-01-457-0371
NSN 6135-00-334-4500
NSN 5999-01-467-3334
NSN 5996-01-628-6588
NSN 5930-01-460-2942
NSN 4140-01-247-4837
NSN 6320-01-216-1678
NSN 5930-01-568-7556
NSN 5905-01-634-0595
NSN 5998-00-212-4406
NSN 6145-01-362-1298