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 5915-01-600-5446
NSN 5930-01-100-1244
NSN 6145-01-575-8783
NSN 5960-00-962-3345
NSN 6645-00-884-5845
NSN 5999-01-216-3649
NSN 6650-01-252-1557
NSN 6220-00-155-4524
NSN 5999-01-026-1454
NSN 5998-01-432-6623
NSN 6645-01-382-3114
NSN 6320-01-470-6826