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 5920-00-862-5820
NSN 5985-00-075-8391
NSN 5855-00-466-2309
NSN 5895-01-551-9413
NSN 6645-00-434-8793
NSN 5965-01-355-7164
NSN 5855-01-118-2228
NSN 6685-00-772-0468
NSN 5996-00-098-3864
NSN 5855-01-180-2172
NSN 5930-00-221-5070
NSN 6130-00-239-6906