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 6650-00-171-4175
NSN 5999-01-225-2561
NSN 5935-00-464-9008
NSN 5835-01-111-9838
NSN 6320-01-195-5583
NSN 5965-00-233-3851
NSN 6620-00-209-0767
NSN 5999-00-343-6770
NSN 5895-01-107-7512
NSN 2925-01-323-4235
NSN 5915-01-350-8680
NSN 6320-00-564-2772