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 5999-01-055-5243
NSN 6685-01-481-4374
NSN 6150-01-441-5591
NSN 5998-01-412-8054
NSN 6610-00-419-3154
NSN 6610-01-100-3662
NSN 5960-01-412-0619
NSN 5935-01-007-6646
NSN 5945-01-386-9615
NSN 5960-00-034-7925
NSN 5915-00-911-9893
NSN 7035-01-099-2311