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 2925-00-185-1618
NSN 5910-00-177-4472
NSN 6150-00-326-4347
NSN 5935-01-126-6462
NSN 5910-01-423-9485
NSN 7035-01-626-1747
NSN 6650-01-588-6020
NSN 5950-01-398-0762
NSN 5855-01-524-9353
NSN 5925-01-323-6491
NSN 6105-01-389-3339
NSN 5925-01-050-2936