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 5945-01-601-5257
NSN 5950-01-036-0141
NSN 6150-01-098-9609
NSN 6240-00-518-3541
NSN 6620-00-825-2227
NSN 5835-01-449-7511
NSN 5910-01-210-4094
NSN 5965-01-064-7496
NSN 5910-01-117-5196
NSN 6150-01-029-2146
NSN 6110-00-795-3706
NSN 5915-01-371-2584