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 6650-00-760-1385
NSN 6320-00-004-9158
NSN 6130-00-985-5345
NSN 5996-01-306-2076
NSN 4140-01-541-1633
NSN 6610-01-648-4460
NSN 5950-01-381-5555
NSN 6645-00-664-4665
NSN 4140-01-329-9523
NSN 6130-00-236-1963
NSN 5998-01-437-5951
NSN 6110-01-477-6707