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 4140-00-652-4547
NSN 6320-00-139-1090
NSN 6130-01-420-0421
NSN 5996-01-641-2518
NSN 6150-01-237-3639
NSN 5930-01-065-4623
NSN 5925-00-844-4132
NSN 5998-00-800-2837
NSN 6105-01-199-4265
NSN 5990-01-272-4091
NSN 5975-00-514-3340
NSN 5920-01-074-6865