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 5965-01-604-0409
NSN 6135-01-400-2947
NSN 6130-01-563-1811
NSN 6145-01-462-0353
NSN 5910-00-192-3345
NSN 5855-01-381-6052
NSN 6650-01-492-9525
NSN 5835-00-173-4456
NSN 5985-00-869-8497
NSN 5905-00-466-3619
NSN 5835-00-233-6327
NSN 5915-01-203-1131