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 6145-01-089-9230
NSN 6685-00-919-3784
NSN 5910-00-020-2762
NSN 4140-00-551-3151
NSN 5965-01-406-4164
NSN 6650-01-654-6257
NSN 5930-00-122-2046
NSN 6110-01-065-5791
NSN 5975-01-446-6074
NSN 5935-00-430-2179
NSN 6105-00-153-0238
NSN 6650-01-418-3228