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 6135-00-557-0174
NSN 6320-00-646-3311
NSN 5895-01-269-0724
NSN 5935-01-562-1017
NSN 5915-01-012-2964
NSN 4140-01-280-5364
NSN 5835-00-231-9544
NSN 5835-01-090-0784
NSN 5835-00-523-0736
NSN 5935-00-740-4250
NSN 6685-01-426-8929
NSN 5930-01-172-5863