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 4140-01-359-4171
NSN 6220-01-483-6752
NSN 7035-01-479-1840
NSN 5935-01-024-9224
NSN 5996-01-422-8103
NSN 5895-00-369-7108
NSN 6130-01-463-3296
NSN 6645-01-276-1029
NSN 6105-00-586-7726
NSN 6145-01-210-6543
NSN 5975-01-519-1367
NSN 6650-00-353-4097