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 5990-01-411-5930
NSN 5920-00-853-2778
NSN 4140-01-154-5830
NSN 6320-00-908-6841
NSN 6610-00-500-6944
NSN 5910-00-007-5236
NSN 5855-01-274-2307
NSN 5915-01-285-2382
NSN 5990-00-144-3243
NSN 6610-01-524-7068
NSN 4140-01-095-2719
NSN 5945-01-582-4788