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 5920-01-158-3664
NSN 5965-00-006-8004
NSN 5905-01-604-7681
NSN 5920-01-171-3624
NSN 6645-01-592-0540
NSN 5960-01-057-4058
NSN 5925-01-226-5942
NSN 5985-00-968-0691
NSN 6105-00-286-0694
NSN 5960-01-414-8918
NSN 6320-01-585-8468
NSN 5999-01-634-0576