515X349 Exterior Primer

515X349 Exterior primer is a conventional solids urethane compatible epoxy coating that is formulated to protect aluminum and composite substrates from corrosion.

  • Compatible with Desothane® HS topcoats
  • Excellent adhesion to aluminum and composite surfaces
  • Apply with all current non-electrostatic spray equipment
  • Improved Skydrol® resistance
  • Apply in a wide range of conditions
  • Difficult to remove with chemical strippers
  • Service temperature -54°C to 177°C (-65°F to 350°F)
Components Mix ratio (by volume):  515X349 (base component)  1 part: 910X533 (activator component) 1 part
Surface Preparation and Pretreatments: 515X349 primer can be applied over, MIL-C-5541, or chromic acid anodized aluminum.

Instructions for Use/ Mixing Instructions: Shake the base component thoroughly before adding the activator, and stir well. Agitate for 10 minutes to ensure proper mixing. Induction time is required based on temperature.
Note: It is important to condition the paint for 24 hours prior to mixing by placing all materials in the shop or hangar, with ambient temperatures between 13° and 35°C (55° to 95°F). The minimum temperature of the paint components should be 13°C (55°F) prior to mixing.

Pot Life: 8 hours @ 21 – 25°C (70 – 77°F)

Shelf Life: 12 months from date of manufacture to most OEM material specifications. Consult the specification to verify shelf life requirements.
24 months from date of manufacture for PRC-DeSoto Standard.
Note: Shelf life is provided for original, unopened containers.

Safety Precautions: Comply with all local safety, disposal and transportation regulations. Check the Safety Data Sheet (SDS) and label of the individual products carefully before using the products. SDS’s are available on request.

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Label Value
515X349 primer is qualified to:
BMS 10-79 Type III Class A Grade A
DHMS C4.04 Type 6 Class B Grade A
DHMS C4.18 Type III Class A Grade A
DMS 2144 Composition A
SMS 111204 Type I
VMS C4.18 Type III
Note: PPG Aerospace recommends you check the most recent specification QPLs for updated information.


Title File
Technical Data Sheet Download