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 6150-01-023-7710
NSN 6645-01-657-2604
NSN 5996-01-648-3366
NSN 2925-01-299-6967
NSN 5998-01-064-2641
NSN 5835-00-794-7500
NSN 6135-00-519-1325
NSN 5985-00-417-1105
NSN 5855-00-548-4742
NSN 5935-01-263-2000
NSN 5945-01-627-3180
NSN 6130-00-387-2051