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 5960-00-960-6805
NSN 5975-01-235-7489
NSN 6145-01-535-1026
NSN 6650-00-434-0188
NSN 5990-01-582-1977
NSN 5925-01-329-7683
NSN 6650-01-559-3862
NSN 5990-00-063-9160
NSN 6650-01-421-5355
NSN 6150-01-207-9165
NSN 5935-01-355-3822
NSN 5835-01-223-5084