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 5935-00-156-0455
NSN 6650-00-407-0745
NSN 5945-00-857-8950
NSN 6150-01-423-0505
NSN 6145-01-547-3496
NSN 6145-01-382-7829
NSN 5930-01-026-3544
NSN 5960-01-632-6576
NSN 5930-01-508-6195
NSN 6320-01-461-1390
NSN 5915-00-580-2716
NSN 5930-00-009-3416