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 6610-00-285-5366
NSN 6220-00-419-3633
NSN 6145-00-171-3152
NSN 6135-01-487-6275
NSN 6645-00-601-2081
NSN 5905-01-391-4983
NSN 5975-00-734-6243
NSN 5965-00-822-3284
NSN 5935-01-365-9012
NSN 5915-00-319-8434
NSN 6130-01-430-3330
NSN 6650-01-398-1117