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 5996-01-074-2696
NSN 6320-01-386-3491
NSN 6620-01-029-4777
NSN 5960-00-506-8064
NSN 5960-01-129-4203
NSN 6645-01-219-4492
NSN 6320-00-369-1333
NSN 5925-00-809-7050
NSN 5920-01-513-9340
NSN 5835-01-338-5176
NSN 5999-00-554-9966
NSN 6130-00-882-9330