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 5998-01-542-1282
NSN 5998-00-088-4648
NSN 6220-00-244-2040
NSN 6320-01-352-5653
NSN 5910-00-805-3945
NSN 4140-01-541-1633
NSN 5835-01-328-6626
NSN 6220-00-138-0589
NSN 6620-01-529-2518
NSN 5996-01-133-8211
NSN 6220-00-816-8131
NSN 5945-00-553-9963