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 6620-01-383-1997
NSN 6645-01-023-2180
NSN 5998-01-048-9008
NSN 6130-00-775-7136
NSN 5990-00-518-7525
NSN 5905-00-467-9329
NSN 5895-00-857-5580
NSN 5965-01-420-6613
NSN 4140-01-190-6460
NSN 5965-01-478-0338
NSN 5835-00-016-3671
NSN 6105-00-112-7548