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 6130-00-630-0304
NSN 5990-01-328-8225
NSN 5855-01-361-2362
NSN 6650-01-052-2143
NSN 6620-00-004-1374
NSN 6240-01-327-3239
NSN 5998-01-090-0724
NSN 6220-01-252-0976
NSN 5965-01-417-3211
NSN 5990-01-206-3606
NSN 5990-01-621-2788
NSN 5895-00-763-3020