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 5950-01-020-0657
NSN 5975-01-498-3259
NSN 5975-01-195-6562
NSN 6105-00-538-0862
NSN 6320-01-352-8084
NSN 6620-00-917-5259
NSN 7035-01-551-4858
NSN 6130-01-616-6017
NSN 6650-01-500-8561
NSN 5965-00-289-6280
NSN 5915-01-235-6318
NSN 6150-00-169-1770