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 5920-01-169-1545
NSN 5999-01-328-5515
NSN 5945-01-484-9325
NSN 5960-00-132-5964
NSN 6145-01-241-9221
NSN 6110-00-880-6376
NSN 5930-01-551-1123
NSN 6135-01-606-0596
NSN 6145-00-223-2885
NSN 5920-00-263-2192
NSN 6110-00-773-0915
NSN 5965-01-468-6186