Product details
Alkyd Metal Primer – Flexrock FX-M55 Rust Inhibitor
Flexrock FX-M55 is a premium alkyd metal primer designed to protect steel surfaces from atmospheric corrosion in both industrial and commercial environments. This high-solids, red-oxide formulation dries quickly and provides superior rust inhibition without the use of hazardous metals like lead, chromate, or barium.
With excellent adhesion and coverage, FX-M55 can be applied via brush, spray, or roller, and serves as a reliable primer under a range of topcoats including alkyd, latex, or urethane-based coatings. It is suitable for both interior and exterior use and resists general weathering and abrasion.
✅ Features & Benefits
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Rust-inhibitive red-oxide alkyd formula
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Fast drying for efficient maintenance jobs
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Lead-, chromate-, and barium-free pigmentation
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Excellent adhesion to abrasive-blasted steel
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Compatible with alkyd, latex, and urethane topcoats
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Interior and exterior application
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Corrosion and rust undercutting resistance
✅ Recommended Uses
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Commercial and industrial steel structures
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Equipment frames, tanks, steel doors, piping
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As a base coat for alkyd, latex, or urethane coatings
✅ Coverage
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1 gallon = 205–342 sq. ft. (depending on surface porosity and texture)
✅ Application Instructions
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Surface must be clean, dry, and free of contaminants
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Apply by brush, roller, or airless sprayer
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Mix well before use
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Can be top-coated once dry (follow product instructions for timing)
✅ Packaging
Size | Description |
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1-Gallon Can | Reddish Brown |
5-Gallon Pail | Reddish Brown |
VOC Compliance | < 340 g/L (low VOC) |
📘 FAQs
Q: Is FX-M55 compatible with water-based topcoats?
A: Yes, it can be top-coated with both latex (water-based) and alkyd or urethane-based coatings.
Q: Does this primer require blasting or sanding before application?
A: For optimal results, abrasive blasting is recommended. However, it can be used on cleaned and prepared steel surfaces as well.
Q: Can FX-M55 be used on galvanized steel?
A: It is primarily designed for uncoated steel. For galvanized surfaces, consult Flexrock technical support for compatibility.
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