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 5990-00-067-6791
NSN 6130-01-517-2151
NSN 7035-01-441-3188
NSN 6105-00-243-4001
NSN 6650-01-305-8079
NSN 5998-01-099-7181
NSN 6645-00-938-2173
NSN 6150-01-044-7370
NSN 6145-00-082-0953
NSN 5910-00-122-3536
NSN 5950-01-606-6568
NSN 6135-01-529-2180