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 5975-01-198-9916
NSN 5925-01-039-3073
NSN 6650-01-024-9554
NSN 6135-01-424-8130
NSN 6135-00-377-9165
NSN 5999-00-104-5582
NSN 5925-01-454-8693
NSN 5835-01-069-2359
NSN 6105-00-228-7031
NSN 5985-01-212-9628
NSN 5996-01-524-4955
NSN 6145-01-332-9171