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 5925-00-704-4491
NSN 5960-01-579-1661
NSN 5835-00-187-1481
NSN 5998-00-253-4410
NSN 6150-00-830-8154
NSN 5996-00-010-9395
NSN 5915-00-838-5919
NSN 6650-00-896-9468
NSN 5965-01-399-8454
NSN 5910-00-594-7986
NSN 5915-00-491-6617
NSN 7035-00-797-2635