Product Details
The 3M™ Wetordry™ Paper Sheet 431Q measures 9" x 11" and features 400 grit silicon carbide abrasive, known for its extra-fast cutting and ability to produce smooth, professional finishes. It is constructed on a strong C-weight, waterproof paper backing that supports both wet and dry sanding applications on various substrates including paint, primer, gel coat, metal, and wood. The sheets can be used dry or with water, allowing users to rinse dust and debris away during use to prevent clogging and reduce airborne dust, which enhances cutting speed and finish quality. Designed for typical applications such as paint preparation, finishing, blending, cleaning, and fine feather edging, these sheets are ideal for surfaces that generate significant dust; they can also be cut to size as needed. Silicon carbide abrasive is characterized by sharp points that fracture easily, constantly exposing new cutting edges; while the mineral has a shorter lifespan than aluminum oxide, it yields a superior finish for low-pressure sanding tasks. The lightweight, smooth waterproof paper backing is tailored for lighter sanding applications and optimal performance in combination with water to maintain surface cleanliness and abrasive efficiency. Warranty terms are provided by 3M, ensuring product reliability and satisfaction in industrial and marine finishing contexts.








