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 5990-01-089-2652
NSN 4140-00-450-1989
NSN 6135-01-470-4077
NSN 5915-01-394-5150
NSN 5930-00-767-4310
NSN 5910-01-464-4672
NSN 6220-01-353-5851
NSN 6610-01-487-4626
NSN 5990-01-388-0252
NSN 6685-01-119-3459
NSN 5985-00-486-8589
NSN 6105-01-471-8085