No—not every outdoor bench factory uses sanded and sealed wood on all models. Many factories do sand and seal wood on their premium, solid-wood, or weather-ready lines, but this is a model-by-model choice rather than a universal rule. Budget benches, unfinished kits, or ready-to-finish pieces may be sanded only lightly—or not at all—and left for the buyer to seal. Benches made from metal, HDPE, or composite materials may not need wood sanding and sealing, though edges and hardware should still be deburred and corrosion-resistant. To get a bench that won’t splinter, ask for the exact model specification. Look for wood that has been kiln-dried and sanded to at least 120–180 grit, with rounded or eased edges, sealed end grain, and a UV-resistant outdoor finish such as marine-grade oil, penetrating sealer, or flexible exterior lacquer. Teak, cedar, acacia, eucalyptus, and robinia are better choices than untreated pine or rough-sawn softwood. If the factory says “all models are sanded and sealed,” request that in writing, including which surfaces are treated and what maintenance is required. Also ask whether pre-drilled holes, cut ends, and assembly joints are sealed, because water can enter raw wood there and cause swelling, cracks, and splinters. Even a well-sealed bench benefits from periodic cleaning and re-oiling or re-sealing. So the honest answer is: some outdoor bench factories sand and seal every wood model, but you should never assume it. Confirm the finish schedule, wood species, sanding grit, edge treatment, and warranty before you buy. That is how you find a splinter-free outdoor bench instead of hoping one arrives that way.