Use Case: Commercial & Military Aviation

Elastomeric Protection for 600°F Hot Zones.

Replace brittle silicones and heavy heat shields with flexible, fuel-resistant coatings for nacelles, thrust reversers, and engine bays.

250°C
Longterm Temp Rating
FKM Chemistry
Proven in aerospace seals
3–5×
Extended repaint interval

The hot zone compromise

Nacelles and Exhaust Zones Exceed Polyurethane Limits.

"Nacelles, thrust reversers, and APU compartments routinely exceed 177°C / 350°F — beyond polyurethane limits. Current solutions force trade-offs between thermal protection, chemical resistance, and flexibility."

Every coating on the market solves one problem and creates three more. Silicones handle the heat but crack under vibration and don't resist Skydrol. Ceramics are too heavy. Polyurethanes fail at temperature. Bare metal corrodes and adds weight. Engineers have been living with these compromises for decades.

GREOS ENDURE eliminates all four failure modes simultaneously — in a standard spray application that drops into existing finishing workflows.

Why current solutions fall short

Polyurethane
Thermal degradation above 177°C / 350°F

Fails catastrophically in nacelle and exhaust zones

Silicone
Rigid and brittle under vibration

Cracks at thermal cycling, poor fuel resistance

Ceramic
Weight penalty and inflexibility

Complex application, delamination under vibration

Bare Metal
Corrosion, weight, no fluid protection

Patchwork appearance, no chemical resistance

Why materials engineers choose GREOS

Reduce Repaint Cycles While Cutting Component Weight.

GREOS ENDURE is the only coating that delivers 250°C / 480°F thermal protection with true elastomeric flexibility AND flight line fluids resistance. This capability does not exist anywhere else in the aerospace coatings industry.

Flexible at Temperature
Won't crack or delaminate during thermal cycling — unlike silicones or ceramics. Elastomeric properties maintained at 250°C / 480°F longterm.
Fuel & Hydraulic Resistant
FKM fluoroelastomer chemistry proven in aerospace seals for decades — now in a sprayable coating for large surface protection.
Lightweight Thin Film
Spray application under 0.5mm replaces heavy metal heat shields. Measurable weight savings across nacelle and exhaust assemblies.
Color-Matched Aesthetics
CICP pigments maintain gloss and color stability per ASTM D523 and G155. OEM-quality finish across hot zone surfaces.
Standard Spray Application
No special equipment. No process changes. Drops into existing OEM and MRO finishing workflows with CARB-exempt solvents.
CARB-Compliant, Low-VOC
CARB-exempt solvent blend. Non-PFAS dispersants. Compliant for ground operations and manufacturing in California and global markets.

Where to specify GREOS

Critical Protection Zones on Commercial & Military Aircraft.

GREOS ENDURE is designed for any airframe surface where thermal demand exceeds polyurethane limits while maintaining flexibility, chemical resistance, and OEM finish requirements.

Nacelle Lips & Cowlings
Longterm exposure up to 250°C / 480°F. Requires flexibility for vibration isolation and fuel/hydraulic fluid resistance.
GREOS ENDURE
Thrust Reversers & Exhaust
Heat shock cycling, erosion from exhaust particulates, and vibration exposure throughout mission cycle.
GREOS ENDURE
Bleed Air Ducts & APU Bays
177–232°C / 350–450°F sustained exposure with Skydrol® and hydraulic fluid contact.
GREOS ENDURE
Fighter Engine Bays
Extreme heat, vibration, MIL-SPEC fluid resistance, and sustained high-tempo operations requiring minimal repaint cycles.
GREOS ENDURE

Environmental compliance

CARB-Compliant. Low-VOC. Non-PFAS.

GREOS coatings use California CARB-exempt solvents and non-PFAS dispersants, meeting stringent environmental regulations without compromising performance. Compliant for OEM manufacturing and MRO depot operations in California and global markets.

Low VOC Emissions
CARB-exempt solvent blend compliant for indoor application in regulated manufacturing environments
Non-PFAS Dispersants
Formulated without PFAS dispersants to support PFAS-free procurement requirements
CARB-Exempt Solvent System
Compliant for ground operations and depot application under California Air Resources Board regulations
Global Market Compliance
Formulated to meet or exceed environmental regulations in major aerospace manufacturing markets worldwide

Testing & qualification

Engineered to Meet Aerospace Standards.

GREOS ENDURE formulations are designed to meet recognized aerospace and aviation standards. GREOS provides evaluation samples and test method reference suites for customer qualification programs.

Thermal & Environmental
  • ASTM D573Heat aging resistance
  • RTCA DO-160GThermal cycling, humidity, salt fog
  • ASTM D746Low temperature brittleness
  • ASTM G155Xenon arc weathering
Fluid Resistance
  • BMS 10-86Flight line fluids compatibility
  • ASTM D471Fuel immersion resistance
  • SAE AMS 1424/1428De-icing fluid resistance
Mechanical & Adhesion
  • ASTM D412Tensile strength and elongation
  • ASTM D4541Pull-off adhesion strength
  • ASTM D968Abrasion resistance
  • MIL-STD-3034Rain erosion resistance

Performance characteristics and temperature ratings are based on internal laboratory testing. Actual results may vary by application, substrate, and operating conditions. Customers should conduct their own testing to confirm suitability for specific use cases. Information provided is for reference only and does not constitute a warranty or performance guarantee. For application-specific guidance, contact the GREOS technical team.

Other Applications
GREOS coatings serve every high-temperature aerospace and defense environment.
Use Case – Defense Advanced Platforms
Use Case – Space and Launch Systems
Use Case – Advanced Air Mobility
Use Case – Military Rotorcraft and UAVs

Specify GREOS for Your Next Hot Zone Application.

Request the technical datasheet to review performance characteristics, application specifications, and test method references for nacelle, exhaust, and engine bay applications. Evaluation samples available for customer qualification testing.

Request Technical Datasheet Contact Application Engineer