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 6620-00-517-6209
NSN 6650-00-500-6455
NSN 6320-01-021-6633
NSN 5910-00-359-8482
NSN 6145-01-448-6838
NSN 6650-01-290-4001
NSN 6220-00-818-3824
NSN 6320-01-583-6809
NSN 5920-01-659-0430
NSN 6145-01-572-1557
NSN 5835-01-528-1864
NSN 6135-00-995-1089