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 5999-00-276-9299
NSN 5975-01-474-9253
NSN 7035-00-064-7008
NSN 5935-00-318-2805
NSN 6610-01-276-7766
NSN 5895-00-574-0287
NSN 6130-01-180-3820
NSN 2925-01-391-9247
NSN 5998-01-491-4935
NSN 6135-01-391-8539
NSN 6130-01-654-6314
NSN 6610-01-278-9215