| 428 / | HD | STOCK MATERIAL OR MISCELLANEOUS ARTICLES |
| 221 | DF | WEB OR SHEET CONTAINING STRUCTURALLY DEFINED ELEMENT OR COMPONENT {9} |
| 292.1 | DF | .~ Noninterengaged fiber-containing paper-free web or sheet which is not of specified porosity {7} |
| 295.1 | DF | .~.~ Fiber embedded in or on the surface of a natural or synthetic rubber matrix {4} |
| 295.4 | | .~.~.~ Fibers are aligned substantially parallel {2} |
| 295.7 | DF | .~.~.~.~> Fiber is nonlinear (e.g., crimped, sinusoidal, etc.) |
| 296.1 | DF | .~.~.~.~> Fiber is precoated |