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 5905-00-622-1527
NSN 5960-01-113-4839
NSN 6135-00-998-5884
NSN 4140-01-155-9414
NSN 6645-00-392-8728
NSN 6650-01-169-9227
NSN 6620-01-550-8573
NSN 5915-01-057-6798
NSN 5935-01-346-2658
NSN 7035-01-590-4065
NSN 6650-00-255-1401
NSN 5975-00-592-3925