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 6220-00-103-9973
NSN 5996-00-098-3864
NSN 5998-00-151-8282
NSN 5855-00-491-7079
NSN 6105-01-497-5611
NSN 5930-01-441-8994
NSN 5915-01-249-0106
NSN 6135-01-529-3789
NSN 5905-00-227-0117
NSN 5895-00-899-0334
NSN 6130-00-420-2412
NSN 6320-01-170-4068