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 5998-00-969-4793
NSN 5975-01-078-4187
NSN 4140-01-322-8491
NSN 5945-01-119-4747
NSN 7035-00-834-2090
NSN 5920-00-402-1752
NSN 5930-01-435-6164
NSN 6135-00-309-0074
NSN 5998-01-423-8931
NSN 5945-01-411-6180
NSN 6320-00-456-0836
NSN 6150-00-288-0751