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 5960-00-382-6012
NSN 6320-00-646-3311
NSN 5985-01-463-4453
NSN 6130-01-449-8556
NSN 5915-00-818-8688
NSN 5920-01-031-1199
NSN 6320-01-170-4068
NSN 5990-01-210-9788
NSN 5855-01-421-7691
NSN 5998-01-550-2845
NSN 5990-01-601-0466
NSN 5930-01-441-2219