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 5935-01-260-2259
NSN 6320-00-149-7570
NSN 5975-00-233-6301
NSN 5935-00-221-1651
NSN 5935-01-369-5692
NSN 6320-01-292-6635
NSN 6320-01-495-1244
NSN 5990-01-568-5565
NSN 5999-00-315-3805
NSN 5985-01-066-3062
NSN 6685-01-164-6558
NSN 5915-00-150-4694