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 5975-00-624-1919
NSN 4140-01-506-1398
NSN 6610-01-224-7247
NSN 6685-00-258-9191
NSN 5905-01-658-1932
NSN 5999-01-354-9440
NSN 5998-01-624-4026
NSN 5905-01-485-2326
NSN 5960-00-193-5088
NSN 5996-00-678-2254
NSN 5855-01-530-4147
NSN 5920-01-254-2753