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 5990-01-212-2037
NSN 5895-01-469-6120
NSN 5935-00-983-5291
NSN 6135-01-329-6022
NSN 5935-01-153-2662
NSN 6145-01-140-1538
NSN 6110-01-392-8049
NSN 5835-01-608-4285
NSN 6650-00-143-1889
NSN 5985-01-634-0635
NSN 5996-01-308-7987
NSN 5965-01-406-3156