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 6150-00-481-4763
NSN 4140-00-718-0855
NSN 5965-01-435-6644
NSN 5835-01-245-8077
NSN 5905-01-296-9201
NSN 5998-00-455-5544
NSN 6320-00-646-3311
NSN 4140-01-390-1729
NSN 6220-01-036-5331
NSN 4140-01-012-3996
NSN 5945-01-137-4092
NSN 5925-01-093-5961