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 5915-01-075-7240
NSN 5910-01-286-3782
NSN 5990-01-256-8441
NSN 5930-01-519-8896
NSN 6110-00-268-2919
NSN 5999-01-570-6757
NSN 6620-01-144-8609
NSN 6610-01-010-4516
NSN 6220-01-010-1452
NSN 6105-01-634-0322
NSN 5999-00-117-4567
NSN 6145-01-112-0902