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 5975-01-574-3740
NSN 6150-01-576-0763
NSN 6320-00-270-8222
NSN 6110-01-467-2882
NSN 4140-00-789-2543
NSN 6135-01-252-0315
NSN 5945-01-533-2689
NSN 6130-00-239-8648
NSN 5990-00-951-8367
NSN 5920-00-730-8541
NSN 5985-00-820-9265
NSN 6105-01-366-2461