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 6150-01-607-0451
NSN 6130-01-009-4290
NSN 5915-01-050-7361
NSN 5835-00-484-1529
NSN 5915-01-077-1076
NSN 5960-00-963-1285
NSN 2925-01-170-1089
NSN 2925-00-728-4558
NSN 5910-01-511-0224
NSN 6650-01-416-6272
NSN 5965-01-260-7146
NSN 6110-01-427-9277