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 6130-01-253-6016
NSN 4140-01-360-6744
NSN 5925-01-117-5628
NSN 5895-00-717-8878
NSN 6130-00-419-1120
NSN 5905-00-374-3600
NSN 6645-01-605-4351
NSN 6220-01-181-1154
NSN 5930-00-862-1084
NSN 5945-00-237-1713
NSN 2925-00-167-6762
NSN 6650-01-509-4948