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 5975-01-613-7922
NSN 5925-01-114-7586
NSN 6135-01-419-2233
NSN 5965-01-632-5259
NSN 5996-00-186-8709
NSN 5895-00-474-3975
NSN 5915-01-186-9107
NSN 5920-01-532-4452
NSN 5835-00-733-9145
NSN 5935-00-076-3026
NSN 6650-01-169-6367
NSN 5855-00-165-3093