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 5855-01-646-5554
NSN 5935-01-255-9625
NSN 5985-01-428-7295
NSN 5910-01-465-0984
NSN 5895-01-140-2818
NSN 5965-00-150-1144
NSN 5895-00-138-0648
NSN 6130-00-196-0618
NSN 5996-00-648-2490
NSN 5999-01-384-5031
NSN 6105-01-376-5902
NSN 5990-01-118-0151