PPG CA8620A02250 (4-Ltr-Kit)

Additional Product Information

Overview

Desofill CA8620 HS PU Sanding Surfacer is a chromate-free polyurethane sanding surfacer used in aviation and MRO environments to improve the surface finish of aluminium, fiberglass, and composite components. It functions as both a sanding primer and pore filler, helping maintenance teams achieve smooth, high-quality finishes prior to topcoat application. Aircraft finishing teams rely on this product for its durability, flexibility, and resistance to fluids and harsh operating conditions.

Key Technical Specs for Desofill CA8620 HS PU Sanding Surfacer

• Type: Chromate-free polyurethane sanding surfacer / pore filler
• Size / Volume: Supplied as base, activator, and thinner kits (market pack sizes vary)
• Color: Beige or Light Grey
• Viscosity: 12 17 sec (FORD4) at 23 C (73 F) mixed 2:1:1
• Working / Pot Life: 1 3 hours depending on thinner ratio
• Cure Time: Dry to sand from 3 12 hours; full cure 7 9 days
• Tensile / Peel Strength: Not specified by manufacturer
• Shore Hardness: Not specified by manufacturer
• Service Temperature: ?54 C to 177 C (?65 F to 350 F)
• Recommended Film Thickness: 60 120 ?m (2.4 4.8 mil)
• Typical Uses: Surface smoothing, pore filling, and sanding primer prior to polyurethane topcoats
• Shelf Life: 24 months unopened (5 C 35 C / 41 F 95 F storage)

Approvals & Specifications

• ECS 2067-20
• DGQT 1.7.0.0121
• DGT 99993
• MEP 10-70
• Meets AIMS 04-04-011 performance requirements
• Compatible with AIMS 04-04-012, AIMS 04-04-026, AIMS 04-04-054, BS2X33A+B

Typical Aircraft MRO / AOG Applications

• Surface preparation of aluminium airframe panels
• Composite fairing and radome finishing
• Fiberglass component smoothing prior to repaint
• Pore filling of composite structures
• Preparation before polyurethane aerospace topcoats

Compatibility & Safety Notes

• Requires corrosion-resistant primer when used on aluminium
• Compatible with epoxy primers and polyurethane topcoats
• Apply to clean, degreased surfaces using approved solvent cleaners
• Use PPE including gloves, respirator, and eye protection
• For industrial use only; follow SDS for handling and exposure guidelines

Packaging & Procurement

• Supplied as multi-component system: Base, Activator, and Thinner
• Storage temperature: 5 C 35 C (41 F 95 F)
• High solids formula reduces VOC and improves coverage
• Suitable for spray, brush, or cloth application

Why Desofill CA8620 HS PU Sanding Surfacer is Chosen for AOG / MRO

• Fast drying and sanding turnaround reduces downtime
• Wide service temperature range for harsh environments
• Excellent resistance to fluids and moisture
• Supports high-quality, professional aircraft finishes
• Reliable compatibility with aerospace coating systems

Practical Suggestions for Your Team (AOG Mindset)

• Stock full kit sets for rapid response repairs
• Maintain controlled storage conditions to preserve shelf life
• Train technicians on correct mix ratios and induction times
• Use recommended spray equipment for optimal film build

Manufacture / Aviation Spec Codes

• Manufacturer: PPG Aerospace
• Product ID: Desofill CA8620
• Related Specs: ECS 2067-20, DGQT 1.7.0.0121, DGT 99993, MEP 10-70, AIMS 04-04-011

Alternative Names & Descriptions

• CA8620 PU Sanding Surfacer
• Desofill HS Polyurethane Surfacer
• Aerospace PU Sanding Primer CA8620
• Chromate-Free Aerospace Surfacer CA8620
• PPG CA8620 Pore Filler / Surfacer