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 2925-01-520-4194
NSN 6150-01-120-8487
NSN 5910-00-099-9998
NSN 6135-01-482-3989
NSN 6650-00-842-5463
NSN 7035-00-945-3166
NSN 6220-01-506-7189
NSN 5935-01-351-6553
NSN 5910-01-580-7112
NSN 5960-00-139-3204
NSN 5960-00-539-6739
NSN 5920-00-276-8657