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 2925-01-386-7392
NSN 6650-00-778-2949
NSN 5835-01-267-3388
NSN 6145-01-440-9983
NSN 5996-01-118-2296
NSN 5910-01-406-4317
NSN 5925-01-571-7883
NSN 6130-01-279-7013
NSN 5990-01-651-0170
NSN 5935-00-626-3615
NSN 5996-00-549-4258
NSN 5935-00-983-8049