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 5920-00-758-7846
NSN 5920-00-468-3074
NSN 5996-00-247-3808
NSN 6650-01-519-9165
NSN 6135-01-361-9297
NSN 5835-01-381-2683
NSN 5950-00-179-7927
NSN 5910-01-195-8392
NSN 5835-00-126-0990
NSN 6150-01-568-5976
NSN 5930-00-618-2433
NSN 5895-01-159-5080