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 5905-01-175-3882
NSN 5835-00-174-7763
NSN 5835-00-054-4607
NSN 4140-01-359-2895
NSN 4140-01-175-3883
NSN 5935-01-217-8685
NSN 6105-00-069-4370
NSN 6135-01-543-4256
NSN 5915-01-307-0867
NSN 6650-01-250-1244
NSN 6135-01-398-5922
NSN 6610-01-606-2144