Do not use over plywood
Black oxide coated flutes prevent debris build-up for fast chip removal
star shaped line that is silicone coated to prevent binding in trimmer heads
Military specification MIL-L-2105D
Zinsser Bulls Eye SealCoat Sanding Sealer, 1 Qt. RCA Do not use over plywoodUniversal sanding sealer seals all types of wood surfaces including hardwoods such as mahogany, walnut, birch, poplar, cherry, etc. Recommended for interior woodwork, including paneling, molding, trim, windows, doors, cabinets, furniture, and toys. SealCoat is great for wood floors most floor finishing jobs can be completed in just 1 day. Dries in minutes. Use under all clear wood finishes including oil base and water base polyurethanes, lacquer,