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 6150-01-208-4683
NSN 5835-01-011-4366
NSN 5855-00-688-9954
NSN 6685-00-432-3576
NSN 6650-00-220-2839
NSN 5920-01-648-2686
NSN 5998-01-247-1169
NSN 6135-01-383-1910
NSN 6130-01-257-8876
NSN 6645-01-508-9074
NSN 6135-01-510-9986
NSN 5915-01-281-8559