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 5915-01-134-9695
NSN 5835-01-364-6830
NSN 5935-01-484-9341
NSN 4140-01-440-8151
NSN 2925-00-473-9532
NSN 6220-01-391-7204
NSN 7035-00-043-1325
NSN 5998-01-089-1960
NSN 5965-00-840-6542
NSN 6130-01-099-9800
NSN 5990-00-099-0822
NSN 6650-01-261-5239