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 5935-01-040-4320
NSN 5855-01-023-3727
NSN 5855-01-421-1440
NSN 6650-00-336-4828
NSN 5855-01-566-6869
NSN 5960-01-027-1835
NSN 5965-01-165-8516
NSN 6150-00-391-8856
NSN 5920-01-135-5486
NSN 5835-01-398-3859
NSN 5905-01-116-1767
NSN 5910-00-723-4453