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 5910-00-081-1789
NSN 5999-01-162-9447
NSN 6135-01-571-0845
NSN 5920-01-187-2267
NSN 2925-00-964-7128
NSN 5975-01-339-9970
NSN 5998-01-421-1575
NSN 6110-01-363-5126
NSN 5945-01-021-1345
NSN 6320-01-279-0343
NSN 5920-01-268-3791
NSN 6320-00-456-2092