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 6150-01-142-6163
NSN 6220-00-263-4893
NSN 5990-00-831-5359
NSN 2925-01-495-0586
NSN 5996-00-648-6580
NSN 5999-00-181-2018
NSN 6110-01-501-4424
NSN 6150-00-758-5490
NSN 5855-00-327-2112
NSN 6650-01-085-6088
NSN 5915-00-189-7514
NSN 2925-01-497-9381