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 6220-01-453-3606
NSN 6240-01-224-4125
NSN 5950-00-702-3001
NSN 5925-01-412-6175
NSN 6110-01-117-5900
NSN 5950-00-288-5994
NSN 5960-01-082-4491
NSN 5905-01-269-5965
NSN 6105-01-154-4145
NSN 5910-01-358-3115
NSN 5945-01-397-7212
NSN 6110-00-939-7065