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 6135-01-633-8502
NSN 5910-01-617-1860
NSN 5945-00-190-8006
NSN 5950-00-061-5548
NSN 5960-01-205-0386
NSN 5990-01-127-4853
NSN 6650-00-968-0934
NSN 5935-01-027-3078
NSN 6220-01-551-6390
NSN 4140-01-452-9428
NSN 5998-00-156-4574
NSN 5915-01-034-3494