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 2925-01-502-8863
NSN 6645-00-907-8584
NSN 6105-00-182-5162
NSN 5835-01-237-3769
NSN 5945-00-584-2046
NSN 5960-01-321-2750
NSN 5990-00-319-0811
NSN 5910-01-352-3338
NSN 5915-01-173-2904
NSN 5935-00-902-9695
NSN 5920-00-288-5849
NSN 6650-01-508-7817