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 5996-00-681-0490
NSN 6320-01-352-5653
NSN 5998-01-431-9329
NSN 5915-01-345-9613
NSN 6150-00-798-1131
NSN 5935-01-336-0153
NSN 5855-00-055-1694
NSN 5905-01-174-7098
NSN 6685-00-273-1618
NSN 5835-00-606-7042
NSN 6145-01-530-1295
NSN 5990-01-633-9503