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 6110-00-336-1734
NSN 5920-01-377-8571
NSN 2925-01-355-3866
NSN 5999-00-225-7738
NSN 6320-01-514-6141
NSN 6150-00-782-7687
NSN 5835-00-341-5441
NSN 5930-00-959-5191
NSN 6105-00-099-8818
NSN 6240-01-290-9360
NSN 5999-01-258-3217
NSN 6645-01-449-1824