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 6650-01-619-8373
NSN 6110-01-394-5302
NSN 5990-01-443-2931
NSN 6105-00-693-2207
NSN 5930-00-539-9946
NSN 6135-00-793-1809
NSN 7035-01-494-7900
NSN 5910-01-473-1352
NSN 5965-00-891-2778
NSN 6130-01-112-1453
NSN 5945-00-264-6302
NSN 5975-01-024-5553