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 5935-00-371-0523
NSN 5996-00-736-4589
NSN 6620-01-605-9660
NSN 5990-00-391-5816
NSN 5910-01-097-5052
NSN 6320-01-220-2264
NSN 5835-00-632-8621
NSN 6320-01-439-5264
NSN 5905-01-341-7921
NSN 6645-00-171-9639
NSN 5965-01-515-2009
NSN 5920-01-534-2459