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 5975-00-483-9819
NSN 5998-00-327-8788
NSN 5965-00-243-1243
NSN 6105-00-239-7203
NSN 5985-00-489-6853
NSN 5998-01-366-2278
NSN 6240-01-100-2597
NSN 6130-00-450-1468
NSN 5960-01-439-9517
NSN 5990-01-548-5979
NSN 5945-01-533-7149
NSN 6145-01-106-1252