It almost becomes an across-the-board thing. Practically every American-made product that contains aluminum is going to go up in price, for instance, as there's not nearly enough US aluminum production to satisfy demand. (And, even if there were, US aluminum tends to be considerably more expensive than foreign aluminum, even with the 25% tariff applied...)
Only if the market will bear such expense. If your product sells at $100 and the tariff is $15, what makes you think the importer will be able to sell the same number of units at new price of $115? Depending on the demand, the $15 cost will be born by a combo of the importer and consumer.
There's a reason no economist these days is in favour of tariffs.