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 5920-01-292-0112
NSN 5920-00-199-4050
NSN 5935-00-959-3122
NSN 5945-01-449-1281
NSN 5975-01-301-9440
NSN 5999-00-872-6877
NSN 5960-01-612-6869
NSN 2925-00-134-2191
NSN 5895-01-441-1145
NSN 6645-01-133-2439
NSN 5996-00-902-3445
NSN 5915-00-578-1917