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 6145-01-511-8277
NSN 5998-01-365-7578
NSN 6240-00-942-7274
NSN 6110-01-578-8070
NSN 6240-01-408-6394
NSN 6610-01-352-5500
NSN 4140-01-158-6976
NSN 5855-00-316-5050
NSN 5920-01-014-3939
NSN 6105-00-812-0505
NSN 5930-00-937-6714
NSN 5895-01-533-6224