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 5960-01-503-0362
NSN 4140-01-397-8445
NSN 6105-01-163-1114
NSN 5895-00-969-6690
NSN 5855-00-797-8217
NSN 5920-01-057-8529
NSN 5915-01-487-6454
NSN 6645-01-571-8578
NSN 6320-01-111-0960
NSN 5998-01-015-5165
NSN 5915-01-195-6083
NSN 4140-00-876-9285