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 6150-00-117-4284
NSN 5915-01-302-0375
NSN 5998-01-280-4695
NSN 5996-00-248-7061
NSN 6320-01-021-6633
NSN 6645-01-528-7152
NSN 5905-01-350-1196
NSN 5855-01-506-6767
NSN 6105-01-603-9021
NSN 5999-01-579-6338
NSN 5975-01-189-5880
NSN 5965-01-386-2988