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 6240-01-456-5413
NSN 6650-00-279-5741
NSN 6130-01-350-7032
NSN 5965-01-275-2212
NSN 6240-01-352-3642
NSN 5998-01-494-0492
NSN 6620-00-555-3992
NSN 6110-01-049-7256
NSN 6320-00-225-7013
NSN 7035-01-099-9163
NSN 5950-01-442-1334
NSN 5930-00-164-5274