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 6685-01-240-5895
NSN 4140-01-569-1158
NSN 5905-00-826-6431
NSN 6130-00-164-2228
NSN 6685-01-295-8547
NSN 5960-01-174-6975
NSN 6650-01-385-7151
NSN 5999-01-470-0273
NSN 5855-01-308-0955
NSN 6130-01-476-2463
NSN 5835-01-566-5462
NSN 5950-01-509-2250