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 5990-01-316-0989
NSN 6240-01-170-7340
NSN 6610-01-305-0954
NSN 7035-01-068-5077
NSN 6220-00-564-2868
NSN 5999-01-044-6250
NSN 5930-01-384-3848
NSN 5985-01-356-1622
NSN 5910-00-984-0050
NSN 5895-01-226-5430
NSN 5990-00-772-9277
NSN 6320-01-519-0916