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 5925-00-119-3333
NSN 7035-01-048-2813
NSN 5835-01-379-1407
NSN 6110-01-449-0150
NSN 5920-01-025-5863
NSN 7035-00-523-7492
NSN 6130-01-335-8361
NSN 5915-00-682-0650
NSN 5996-01-178-4724
NSN 5855-01-282-4881
NSN 5925-00-829-0197
NSN 5930-01-577-1665