Akzonobel - Formely Mapaero THINNER SP350 PLUS (0.5-LTR)

Additional Product Information

Overview

PRIMER SP350 is a chromate-free, three-component high-solid epoxy primer designed for corrosion protection of aircraft metallic structures. Developed for aerospace surface protection systems, it is widely used in aviation and maintenance, repair, and overhaul (MRO) operations to enhance durability of structural aluminum alloys and other treated metallic substrates. Aerospace engineering teams rely on SP350 for its strong adhesion, chemical resistance, and environmentally compliant formulation.

Key Technical Specs for PRIMER SP350

• Type: Three-component high solid epoxy aircraft primer
• Available Size / Volume: Base – 4 L; Hardener – 0.5 L and 5 L; Thinner – 1 L and 5 L; Touch-up kit – 45 mL (40 mL base + 5 mL hardener)
• Color: Beige
• Viscosity / Consistency: Spray viscosity at 20°C (68°F) — With dilution: 15 ± 3 s (CA4 ISO4), 20 ± 4 s (ISO4); Without dilution: 16 ± 3 s (CA4 ISO4), 25 ± 4 s (ISO4)
• Cure / Working Time: Pot life – approximately 3 hours at 15°C–30°C (59°F–86°F); 1 hour at 30°C–35°C (86°F–95°F)
• Service Temperature: Depends on aircraft coating system; refer to engineering qualification conditions
• Typical Uses: Aircraft metallic structure corrosion protection, aluminum alloy surface priming, MRO structural repair coating

Approvals & Specifications

• Qualified according to Safran Landing Systems IFC30-125-06
• Qualified according to Safran Nacelles HMRC0149A
• Qualified according to Safran Aircraft Engines DMR74-130
• Chromate-free aerospace coating compliance

Typical Aircraft MRO / AOG Applications

• Aircraft fuselage and structural metal surface priming
• Aluminium alloy landing gear components
• Nacelle and engine structural parts
• Aerospace maintenance touch-up coating operations
• Pre-topcoat protection layer for polyurethane systems such as XS420

Compatibility & Safety Notes

• Compatible substrates include aluminium alloys treated with Alodine conversion coating, chromic acid anodizing (sealed/unsealed), sulfuric acid anodizing, and tartaric sulfuric anodizing.
• Surface preparation must follow supplier recommendations.
• Use clean, dry, oil-free compressed air for spray application.
• Personal protective equipment should be used according to safety data sheet guidelines.
• Reactivate surfaces with approved abrasion or solvent cleaning if recoating window is exceeded.

Packaging & Procurement

• Available Components: Base, hardener/catalyst, and thinner
• Standard Packs: 4 L base, 0.5 L or 5 L hardener, 1 L or 5 L thinner
• Touch-Up Kits: 45 mL AOG/MRO portable repair packaging
• Storage Condition: 5°C–35°C (41°F–95°F), sealed original container
• Ease of Use: Supports both spray gun and brush application methods

Why PRIMER SP350 is Chosen for AOG / MRO

• Fast operational readiness with flexible curing options
• High adhesion performance for aerospace structural repair
• Chromate-free formulation supporting modern environmental compliance
• Suitable for field maintenance and production environments
• Stable pot life supporting controlled repair workflows

Practical Suggestions for Your Team (AOG Mindset)

• Maintain stock of touch-up kits for emergency structural repairs.
• Pre-condition unmixed components at 18°C–25°C (64°F–77°F) for optimal mixing performance.
• Monitor pot life carefully during high-temperature operations.
• Filter mixed primer through 120–150 µm (4.7–6 mils) filter before spray application.
• Train maintenance personnel on recoating window management.

Manufacture / Aviation Spec Codes

• Manufacturer:
• Parent Technology Platform:
• Product Family Code: SP350 Aerospace Epoxy Primer Series
• Export / OEM Reference Codes: IFC30-125-06, HMRC0149A, DMR74-130

Alternative Names & Descriptions

• Aerospace epoxy corrosion protection primer
• Chromate-free aircraft structural primer SP350
• High-solid aerospace epoxy basecoat primer
• Aircraft aluminium alloy protective primer
• MRO aviation structural epoxy coating