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 5925-00-392-6164
NSN 6145-00-586-9463
NSN 5945-01-363-8081
NSN 5935-00-906-1953
NSN 5965-01-493-5534
NSN 4140-01-337-7695
NSN 5835-01-550-5094
NSN 5999-00-171-8858
NSN 5935-01-496-9997
NSN 5910-01-255-1838
NSN 5996-01-140-7683
NSN 5925-01-338-5728