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 6150-01-250-8039
NSN 5985-01-476-8978
NSN 5915-01-054-3109
NSN 5855-01-327-6678
NSN 5960-00-817-5088
NSN 5915-01-429-0874
NSN 5990-01-095-8866
NSN 7035-01-104-5446
NSN 5965-00-925-1725
NSN 6150-00-389-6771
NSN 5990-00-636-4218
NSN 6320-01-441-2438