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 6135-01-215-1245
NSN 5935-01-481-4590
NSN 6110-01-152-2840
NSN 6650-01-115-7981
NSN 6150-00-415-3969
NSN 5975-00-939-4355
NSN 5925-00-112-3460
NSN 5930-00-961-7228
NSN 5990-01-124-9063
NSN 7035-00-188-6674
NSN 5855-00-446-5921
NSN 5920-01-345-7145