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 6130-01-207-0153
NSN 5945-00-550-0000
NSN 6320-01-344-6511
NSN 5915-00-765-6969
NSN 5996-01-283-6729
NSN 4140-01-408-7232
NSN 6320-01-506-9439
NSN 4140-01-624-9799
NSN 6105-01-317-3332
NSN 5855-01-508-3575
NSN 4140-01-364-1104
NSN 5905-00-112-3221