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 6150-01-480-8240
NSN 6320-01-029-4220
NSN 5835-01-593-7579
NSN 5925-01-632-9612
NSN 5999-01-092-3111
NSN 5920-00-180-0223
NSN 5985-00-625-5980
NSN 5945-01-243-1131
NSN 5835-01-336-1153
NSN 4140-00-837-2658
NSN 5975-01-440-8535
NSN 5915-01-139-0943