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 5960-00-441-0832
NSN 5998-01-065-4040
NSN 5935-00-988-2070
NSN 2925-01-247-8058
NSN 6150-01-265-4093
NSN 6240-00-110-4497
NSN 5950-01-497-0066
NSN 6130-00-960-9158
NSN 5996-01-211-0208
NSN 5835-01-113-8731
NSN 6150-01-340-0126
NSN 6650-01-416-0473