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 7035-01-652-2814
NSN 6135-00-519-1325
NSN 6645-00-121-7566
NSN 6130-01-482-4031
NSN 6240-00-737-2775
NSN 6150-00-419-0505
NSN 6320-00-070-4544
NSN 5965-01-502-3030
NSN 5950-01-075-6820
NSN 4140-01-565-4993
NSN 5915-01-399-7278
NSN 6620-01-025-1443