Traffic
Traffic: the interchange table is the ranking asset
Every search in this niche starts from something the buyer already holds: a number stamped on a failed component, a code from a maintenance system, or three measurements taken with a caliper. The distributors that win publish the mapping. An interchange page for each number that names the equivalent you stock, a page for every number you carry with its suffix decoded, and dimension pages that resolve a bore, outside diameter and width combination to real products. Superseded numbers deserve their own treatment, because a plant records the number it bought in 2009 and will keep searching it for another decade. None of this ranks if it lives inside a lookup tool that a crawler cannot enter.
