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 6610-01-351-0072
NSN 6150-01-471-9710
NSN 6650-01-421-4024
NSN 6240-00-296-0488
NSN 5905-01-505-4596
NSN 5960-00-319-4348
NSN 5960-01-278-2852
NSN 5999-00-585-3338
NSN 5930-01-200-2965
NSN 7035-01-471-8349
NSN 6110-00-188-9874
NSN 6130-00-528-7838