PPG 519X303/910X357/020X324 (6-Usqt-Kit)

Additional Product Information

Overview

The DeSoto 519X303 is a high temperature epoxy primer designed for aerospace and MRO applications. It provides superior adhesion and corrosion resistance on aluminum and composite surfaces, capable of withstanding operating temperatures up to 204 C (400 F). Maintenance and repair teams rely on it for its durability, fluid resistance, and consistent performance under varied environmental conditions.

Key Technical Specs for DeSoto 519X303

• Type: High Temperature Epoxy Primer
• Size/Volume: Mix ratio 3:1:2 (Base:Activator:Thinner by volume)
• Color: Aluminized Blue-Green
• Viscosity/Consistency: #2 Zahn cup 16 22 s, #4 Ford cup 10 17 s, ISO 3 mm cup 37 64 s
• Cure/Working Time: Pot life 10 hours at 21 25 C (70 77 F); full cure 14 days
• Tensile/Peel Strength: Not specified
• Shore Hardness: Not specified
• Service Temperature: -54 C to 204 C (-65 F to 400 F)
• Typical Uses: Priming aluminum and composite surfaces, high-heat areas, fluid-exposed components
• Shelf Life: 12 months to most OEM specifications; 24 months for PRC-DeSoto standard

Approvals & Specifications

• 642AS0844
• MM1256
• 299-947-167 Type I
• MMS-436
• CPW 268
• PCS 5409
• HS14569
• PS 13375
• KMB-YW0002
• PWA 568
• MEP 10-090

Typical Aircraft MRO / AOG Applications

• Structural aluminum and composite components
• High-temperature engine compartments
• Exhaust system components
• Fluid-exposed areas including fuel and hydraulic lines
• Aerospace assemblies requiring corrosion protection

Compatibility & Safety Notes

• Compatible with aluminum and composite substrates
• Can be applied using all non-electrostatic spray equipment
• Requires standard PPE including gloves and eye protection
• Follow SDS for safe handling; avoid prolonged inhalation
• Store at 5 C to 35 C (41 F to 95 F) to maintain shelf life

Packaging & Procurement

• Available in mixed kits per manufacturer guidelines (Base, Activator, Thinner)
• Easy to mix and apply under standard MRO shop conditions
• Non-electrostatic spray equipment compatible
• Store in unopened containers in controlled temperature to ensure product integrity

Why DeSoto 519X303 is Chosen for AOG / MRO

• Reliable adhesion and corrosion resistance under high temperatures
• Versatile application on aluminum and composite substrates
• Room temperature curing saves time and resources
• Durable fluid resistance for aerospace maintenance environments

Practical Suggestions for Your Team (AOG Mindset)

• Stock sufficient quantities for fast turnaround on AOG repairs
• Condition components for 24 hours at ambient temperature prior to mixing
• Train maintenance staff on proper mixing and spray techniques
• Keep spray equipment clean using DeSoto CN20, CN44, or Desoclean 45

Manufacture / Aviation Spec Codes

• Manufacturer: PRC-DeSoto International, Inc.
• Product ID: 519X303
• MIL/OEM/Export Codes: See Approvals & Specifications section

Alternative Names & Descriptions

• DeSoto 519X303 Epoxy Primer
• PPG 519X303 High Temperature Primer
• PRC-DeSoto 519X303
• DeSoto 519X303 HT Epoxy
• 519X303 Aluminum/Composite Primer