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 5910-01-604-8999
NSN 6150-01-023-8630
NSN 5905-01-483-3130
NSN 6110-01-108-5057
NSN 5930-01-303-6849
NSN 5905-01-022-8379
NSN 5990-01-633-9503
NSN 5930-01-534-5904
NSN 6130-01-579-4550
NSN 6650-01-393-4152
NSN 5996-01-577-3838
NSN 5965-01-633-8849