Akzonobel - Formerly Mapaero SP-350 EPOXY PRIMER (4-ltr-Tin)

Additional Product Information

Overview

PRIMER SP350 is a high-performance, chromate-free, three-component epoxy primer designed for corrosion protection of aircraft metallic parts. Widely used in aviation and MRO operations, SP350 provides excellent adhesion and chemical resistance, especially on aluminum alloys. Teams rely on it to create a durable base layer for long-lasting topcoat systems, ensuring aircraft structural integrity and maintenance efficiency.

Key Technical Specs for PRIMER SP350

• Type: Chromate-free, high solid epoxy primer, three-component system
• Size/Volume: Base 4 L; Hardener 0.5 L & 5 L; Thinner 1 L & 5 L; Touch-Up Kit 45 mL (Base 40 mL + Hardener 5 mL)
• Color: Beige
• Viscosity / Consistency: Spray 23 3s ISO4 cup; Brush suitable for direct application; adjustable with SP350 Plus thinner
• Cure / Working Time: Pot life 3 hours at 15 30 C (59 86 F); 1 hour at 30 35 C (86 95 F); fully cured 7 days at 23 C (73 F) or accelerated at 40 80 C (104 176 F)
• Tensile / Peel Strength: Excellent adhesion on aluminum alloys and treated metallic surfaces
• Shore Hardness: Not specified
• Service Temperature: Application 15 35 C (59 95 F); Relative Humidity 30 85%
• Typical Uses: Corrosion protection of aircraft structures, base layer for XS420 polyurethane topcoat, MRO maintenance, manufacturing and repair operations
• Shelf Life: Base and Hardener 12 months; Thinner 48 months (stored at 5 35 C / 41 95 F in sealed packaging)

Approvals & Specifications

• Safran Landing Systems: IFC30-125-06
• Safran Nacelles: HMRC0149A
• Safran Aircraft Engines: DMR74-130
• Qualified per OEM and aerospace standards for corrosion protection on aluminum alloys

Typical Aircraft MRO / AOG Applications

• Fuselage metallic parts maintenance and repair
• Wing structural component protection
• Aircraft aluminum alloy treatments in MRO workshops
• Base layer coating for subsequent topcoat systems during AOG events
• Corrosion mitigation for aircraft exposed to harsh environments

Compatibility & Safety Notes

• Compatible substrates: Aluminum alloys, CAA, SAA, TSA anodized and sealed or unsealed
• Use of SP350 Plus thinner recommended for viscosity adjustment
• Apply with appropriate PPE: gloves, protective eyewear, and ventilation in enclosed spaces
• Follow proper handling and storage procedures; avoid skin contact and inhalation

Packaging & Procurement

• Base available in 4 L containers
• Hardener available in 0.5 L and 5 L containers
• Thinner available in 1 L and 5 L containers
• Touch-Up Kits (TUK) 45 mL for localized repairs
• Storage: 5 35 C (41 95 F), full and sealed packaging
• Easy to mix and apply; suitable for spray or brush application

Why PRIMER SP350 is Chosen for AOG / MRO

• Rapid adhesion and cure for fast-turnaround maintenance tasks
• Reliable corrosion protection and chemical resistance
• Versatile application methods (spray or brush)
• Portable touch-up kits for immediate on-site repairs
• Ensures durable foundation for topcoat application in MRO and AOG scenarios

Practical Suggestions for Your Team (AOG Mindset)

• Stock both standard and touch-up kit sizes for flexibility
• Precondition unmixed products between 18 25 C (64 77 F) for best results
• Cover mixed material to prevent drying during pot life
• Train maintenance teams on mixing ratios and substrate preparation
• Ensure spray equipment is clean, dry, and oil-free for consistent application

Manufacture / Aviation Spec Codes

• Manufacturer: SAS
• Product ID: PRIMER SP350
• MIL / OEM / Export Codes: IFC30-125-06 (Safran Landing Systems), HMRC0149A (Safran Nacelles), DMR74-130 (Safran Aircraft Engines)

Alternative Names & Descriptions

• SP350 Epoxy Primer
• Chromate-Free Aircraft Primer SP350
• SP350 High Solid Primer
• SP350 Three-Component Primer
• Aircraft Aluminum Alloy Protective Primer SP350