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 5920-01-591-0490
NSN 6110-01-415-8640
NSN 6685-01-104-1782
NSN 6645-00-551-8291
NSN 7035-01-289-4022
NSN 5985-00-062-4507
NSN 4140-01-331-0844
NSN 5965-01-488-6695
NSN 5965-01-566-2744
NSN 5998-01-463-9077
NSN 6150-00-188-2958
NSN 2925-01-086-5507