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 5996-01-239-3928
NSN 5998-01-273-0980
NSN 5915-00-064-2229
NSN 5895-01-379-6248
NSN 6105-01-607-0381
NSN 5975-01-382-8362
NSN 5930-01-037-1338
NSN 5925-01-384-2580
NSN 7035-01-260-9543
NSN 5925-01-411-6028
NSN 5835-01-133-6485
NSN 7035-01-480-5537