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 6610-01-304-3226
NSN 5965-01-111-6031
NSN 6110-01-044-0230
NSN 5905-01-317-5534
NSN 5920-01-480-2575
NSN 5835-01-560-8525
NSN 5905-01-466-9630
NSN 4140-00-249-5603
NSN 6105-01-236-3648
NSN 5985-00-297-7526
NSN 5990-00-337-5359
NSN 5915-00-860-6306