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 5935-01-303-4077
NSN 6135-01-336-3115
NSN 5999-00-529-0157
NSN 6110-00-769-6537
NSN 6685-01-464-4272
NSN 5920-01-351-1929
NSN 5975-01-418-0376
NSN 6645-01-329-1779
NSN 6130-00-549-2607
NSN 6105-00-925-0519
NSN 6650-00-964-9470
NSN 5996-01-317-1665