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 4140-01-562-0499
NSN 7035-01-224-5165
NSN 5855-00-400-2622
NSN 5925-00-913-8026
NSN 6650-00-000-0164
NSN 6150-00-456-4526
NSN 6150-00-233-5833
NSN 5965-01-142-8044
NSN 5905-01-531-5522
NSN 5998-01-023-4322
NSN 5835-01-257-0154
NSN 4140-01-255-3993