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 5895-00-270-6595
NSN 6220-01-428-8944
NSN 6150-01-232-1150
NSN 6620-00-920-1671
NSN 6220-01-633-6765
NSN 5910-00-180-3731
NSN 5905-00-465-6812
NSN 5855-01-162-5251
NSN 5935-01-431-8734
NSN 6320-00-681-1324
NSN 5960-01-276-2828
NSN 2925-01-359-4027