PPG 54256407 KAF0 (1.06 US gal / 4 Ltr Tin)

5014 PU Surfacer

Overview

5014 PU Surfacer is a two-pack polyurethane sanding surfacer developed by :contentReference[oaicite:0]{index=0} for improving surface finish on aluminium and composite substrates. It is typically used as an intermediate coating over primer systems such as P99 and PAC33, providing a smooth, sandable layer that enhances final appearance and coating build quality. The product is also suitable for epoxy, polyester, and polyamide composite structures.

Key Technical Specs

• Product Type: Two-component polyurethane sanding surfacer
• Mix Ratio (by volume): 2 parts base / 1 part activator / 1 part thinner
• Pot Life: ~3 hours at 21–25°C
• Recommended Dry Film Thickness: 40–150 µm
• Theoretical Coverage: ~4 m²/L at 90 µm DFT
• VOC (mixed): ~540 g/L
• Dry-to-sand: ~10 hours @ 23°C (faster at elevated temperature)
• Full cure: ~7 days at ambient conditions

Approvals & Specifications

• ASNA 4251
• BLGG 900101
• WL5.7140
• Meets AIMS 04-04-002 / 04-04-011 requirements

Typical Applications

• Aerospace exterior surface fairing and surfacing
• Improving aluminium cosmetic finish prior to topcoat
• Composite surface levelling and preparation
• Use over epoxy and polyurethane primer systems
• Aircraft structure finishing where radar/ultrasound transparency is required

Surface Preparation & Application

• Clean surfaces using approved solvent cleaners (e.g. CN20, Desoclean 45, CN13 systems)
• Sand aged primer surfaces prior to application
• Remove release agents from composite substrates before coating
• Mix components thoroughly and ensure materials are conditioned at 15–30°C before use
• Apply using HVLP, pressure pot, or airless spray equipment
• Allow flash-off (~30 minutes) before force drying if required

Compatibility & Safety Notes

• Compatible with aerospace primer systems including AIMS 04-04 series coatings
• Contains flammable solvents—store and handle per flammable liquid regulations
• VOC emissions require controlled application environments
• Refer to Safety Data Sheet (SDS) prior to use

Packaging & Storage

• Supplied in 1 L and 5 L kits (base, activator, thinner)
• Shelf life: 10–24 months depending on component (unopened containers)
• Store between 5°C and 35°C in sealed original packaging

Why This Product is Used in Aerospace Finishing

• Produces a high-quality, sandable intermediate surface layer
• Improves cosmetic finish and coating uniformity
• Supports complex composite and metallic substrates
• Compatible with a wide range of aerospace qualification systems

Manufacturer / Technical Authority

• Manufacturer: :contentReference[oaicite:1]{index=1} (PPG Aerospace division)
• Product Family: Aerospace polyurethane surfacers
• Typical Use: Aircraft exterior coating build systems