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 5960-00-828-8279
NSN 6135-01-071-4923
NSN 5990-01-116-2181
NSN 5965-00-171-1265
NSN 5930-01-010-2660
NSN 6685-01-623-3678
NSN 6320-00-405-2348
NSN 5996-01-528-7850
NSN 6105-01-073-0611
NSN 6145-01-467-3244
NSN 6145-01-238-9985
NSN 5998-01-468-6640