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 5998-01-541-4109
NSN 5920-01-381-3115
NSN 6220-01-441-8662
NSN 5945-00-469-7495
NSN 2925-01-194-2484
NSN 5998-01-577-0199
NSN 5945-01-117-0711
NSN 5905-01-523-1620
NSN 5835-01-060-9491
NSN 5855-01-444-9182
NSN 2925-00-433-5429
NSN 6145-01-032-4557