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 6220-01-268-2220
NSN 4140-01-280-3395
NSN 6320-01-573-6490
NSN 5910-01-054-2029
NSN 6220-01-156-4564
NSN 6650-01-481-8009
NSN 5835-00-283-2814
NSN 6645-01-271-7583
NSN 5920-00-633-0404
NSN 5920-01-297-5895
NSN 5960-01-141-6489
NSN 5990-01-107-1003