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 5910-01-386-1152
NSN 6240-01-200-1663
NSN 6320-01-233-5798
NSN 5835-00-074-3700
NSN 6220-01-520-6281
NSN 6610-01-169-4770
NSN 6650-00-085-3846
NSN 5910-01-467-2404
NSN 4140-00-593-8425
NSN 5925-01-156-0361
NSN 5835-01-253-8092
NSN 5998-00-601-6625