Textile wicks for candles—whether sold in bulk, on spools, or pre-cut—are classified under 5908 as long as they are recognizable as wicks by their construction (typically braided or twisted fiber designed to draw wax). Wicks that have been assembled into a finished candle would instead be classified with the candle.

Both are covered by this heading. Tubular knitted gas mantle fabric is the unfinished knitted tube before it is impregnated and shaped, while a gas mantle is the finished, impregnated article ready for use in a gas lamp. Both forms fall under 590800, so the stage of processing does not change the heading.