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 6220-01-465-3292
NSN 4140-01-484-9834
NSN 6620-01-010-0518
NSN 6650-00-025-4772
NSN 6150-00-272-7949
NSN 6645-01-214-6309
NSN 5945-00-014-2119
NSN 5999-01-459-3987
NSN 6145-00-764-4338
NSN 5915-00-737-6207
NSN 5990-01-191-1772
NSN 5999-01-292-7663