National Paint Polyurethane Primer – Part A (Base) White – 3.6 Liter is a premium-quality polyurethane (PU) primer formulated to deliver superior surface preparation and long-lasting performance. When mixed with the appropriate PU hardener (Part B), it forms a tough, durable primer system suitable for demanding applications.

This PU primer provides excellent adhesion to a wide range of substrates including metal, wood, MDF, fiberglass, and previously painted surfaces. Its high-build formulation helps fill minor surface imperfections, ensuring a smooth and uniform base for PU topcoats.

✅ Key Features

✔ High-performance polyurethane primer base (Part A)
✔ White color for excellent opacity and coverage
✔ Designed for use with compatible PU hardener (Part B)
✔ Excellent adhesion on metal, wood, MDF, and fiberglass
✔ High-build formulation fills minor surface defects
✔ Smooth and uniform surface finish
✔ Durable and long-lasting after curing
✔ Good resistance to moisture, abrasion, and chemicals
✔ Suitable for automotive, industrial, and decorative use
✔ 3.6-liter pack size