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 5915-00-456-0873
NSN 2925-01-013-0413
NSN 6145-00-356-1923
NSN 5895-01-478-6243
NSN 5835-00-419-0575
NSN 5998-01-123-8126
NSN 5999-00-432-5771
NSN 5920-01-013-3883
NSN 5920-00-427-7267
NSN 5835-01-411-7050
NSN 4140-01-198-1452
NSN 6135-01-432-1334