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 5915-01-024-8200
NSN 6150-01-281-7279
NSN 6320-01-442-8604
NSN 6145-00-010-5135
NSN 6650-00-971-5054
NSN 5930-01-269-6032
NSN 5990-01-390-2177
NSN 5930-01-229-6390
NSN 6110-01-358-7476
NSN 5910-01-178-2548
NSN 5895-01-206-3846
NSN 6645-00-171-9251