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 5935-01-176-5057
NSN 6145-01-023-2616
NSN 5945-01-535-8242
NSN 4140-00-465-7668
NSN 5975-01-459-6533
NSN 5835-01-406-4066
NSN 6145-01-350-3532
NSN 6610-01-227-7221
NSN 6150-01-210-8854
NSN 5920-00-269-4060
NSN 5915-01-661-1817
NSN 6685-01-103-7081