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 5930-01-196-5839
NSN 6220-01-197-7387
NSN 6145-01-142-2234
NSN 5965-01-333-8560
NSN 5998-01-020-0124
NSN 5920-01-023-4822
NSN 5965-01-388-1379
NSN 6610-01-034-0798
NSN 6320-00-343-1798
NSN 4140-01-430-2335
NSN 4140-01-600-6117
NSN 7035-01-629-0082