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 5999-00-243-9820
NSN 5905-01-552-8693
NSN 5935-00-835-7450
NSN 5920-00-295-9253
NSN 6610-01-613-5689
NSN 5910-01-301-6164
NSN 6650-00-997-4337
NSN 5835-01-485-0210
NSN 5935-01-398-9899
NSN 4140-01-651-0459
NSN 5975-00-280-6744
NSN 6130-00-351-0309