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 5920-00-226-7148
NSN 5910-01-613-3049
NSN 6610-01-409-1781
NSN 5999-01-561-5053
NSN 7035-01-317-4227
NSN 6240-00-518-2400
NSN 5985-01-156-9835
NSN 4140-00-358-1751
NSN 6645-01-098-5077
NSN 5975-01-263-5809
NSN 5930-01-075-4642
NSN 5996-00-971-2283