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 6220-01-363-5699
NSN 5925-01-454-0253
NSN 5935-01-289-0719
NSN 6650-01-440-5947
NSN 5975-01-436-0567
NSN 6145-00-814-2098
NSN 6650-01-073-5925
NSN 5990-00-108-5400
NSN 5915-00-276-8332
NSN 5935-01-130-7365
NSN 5905-01-500-9043
NSN 5920-00-736-7882