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 5895-01-341-1067
NSN 5910-00-492-4131
NSN 5920-00-504-0564
NSN 6240-01-070-4914
NSN 4140-00-848-6245
NSN 6650-00-782-0223
NSN 5835-01-163-4215
NSN 5975-01-118-8883
NSN 6610-01-485-5083
NSN 5996-00-597-2234
NSN 6610-00-239-2374
NSN 5985-00-836-3042