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 5975-00-155-4181
NSN 5915-01-457-9126
NSN 6130-00-256-4293
NSN 6320-01-280-5091
NSN 5905-00-883-0112
NSN 5950-01-201-0991
NSN 6150-01-037-2251
NSN 2925-00-513-1164
NSN 5996-00-081-2564
NSN 6620-01-200-6493
NSN 6650-01-318-1829
NSN 5855-00-560-0110