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 6320-01-600-0787
NSN 6620-01-577-6285
NSN 5945-00-338-1387
NSN 2925-01-076-6128
NSN 5965-01-188-5849
NSN 6610-00-349-7014
NSN 5999-00-930-1931
NSN 5915-00-223-2686
NSN 5990-01-300-7801
NSN 5945-01-112-0327
NSN 5910-01-057-6883
NSN 5935-01-375-6646