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 5945-01-174-9981
NSN 6320-01-237-9746
NSN 5975-00-273-0790
NSN 5925-00-160-4747
NSN 5965-00-823-8623
NSN 6130-01-599-5592
NSN 6240-01-391-5373
NSN 6130-01-642-1935
NSN 5915-00-467-6796
NSN 5930-01-215-1476
NSN 6145-01-142-9984
NSN 5950-00-281-2389