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 6145-00-350-9285
NSN 6650-00-021-9555
NSN 6130-01-241-6852
NSN 5985-01-255-4455
NSN 5996-00-024-0827
NSN 6320-01-365-2701
NSN 4140-01-424-2431
NSN 4140-01-289-1264
NSN 6620-00-104-5677
NSN 5835-01-416-6455
NSN 6645-01-447-3143
NSN 5905-00-159-6040