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 5920-00-842-9055
NSN 5960-01-097-0083
NSN 6220-00-241-4192
NSN 5965-00-996-3541
NSN 5905-00-948-9389
NSN 5945-01-331-4982
NSN 5985-01-411-7039
NSN 5925-01-382-3323
NSN 6130-01-135-4669
NSN 5920-00-777-3208
NSN 5835-01-495-0595
NSN 5930-00-880-3296