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 5920-00-008-0579
NSN 5905-01-441-3407
NSN 5895-00-497-1160
NSN 5999-01-634-0576
NSN 5935-00-513-9606
NSN 5915-00-176-2548
NSN 6240-01-463-8276
NSN 6145-01-571-7928
NSN 6145-01-057-7267
NSN 6220-01-284-6347
NSN 5905-01-294-5777
NSN 6240-00-170-5302