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 5910-00-574-4719
NSN 6135-01-062-9356
NSN 6685-00-563-3061
NSN 5975-01-123-9111
NSN 5945-01-529-7321
NSN 6135-01-459-6424
NSN 6320-01-484-7734
NSN 5960-01-149-1261
NSN 6620-00-113-5900
NSN 5990-01-651-6364
NSN 6130-01-428-4228
NSN 5975-00-917-7562