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 6650-00-954-4428
NSN 6220-01-146-2838
NSN 6220-00-443-9835
NSN 5930-01-304-7321
NSN 5990-00-534-9798
NSN 5950-01-017-3725
NSN 6105-00-174-2911
NSN 5990-01-050-1102
NSN 5835-01-305-8866
NSN 5935-01-415-9210
NSN 6620-01-247-9170
NSN 7035-01-371-0091