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 6650-00-202-4540
NSN 6240-00-201-1200
NSN 5960-00-405-1284
NSN 5960-01-243-7291
NSN 4140-01-309-4449
NSN 5915-01-277-4459
NSN 6645-01-350-3138
NSN 6620-00-937-5931
NSN 5915-01-617-0630
NSN 6110-00-418-9363
NSN 5960-01-406-4136
NSN 7035-00-215-3272