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 5835-00-807-5632
NSN 5960-00-170-6916
NSN 6320-01-334-9840
NSN 5915-01-365-4045
NSN 6135-00-686-4777
NSN 5935-01-099-7296
NSN 5950-00-678-5331
NSN 6145-01-145-5177
NSN 5990-00-332-1735
NSN 6135-01-553-7711
NSN 5998-00-913-9669
NSN 5965-00-735-9315