02-Y-40A Yellow Epoxy Primer

02-Y-40A Yellow Epoxy Primer is a high solids, chemically cured, strontium chromated primer.

02-Y-40A Yellow Epoxy Primer is compatible with MIL-PRF-85285 polyurethane topcoats and provides corrosion, chemical and solvent resistance for the protection of military aircraft exteriors.

  • High solids
  • Excellent adhesion
  • Corrosion inhibiting
  • Resistant to immersion in hydraulic fluids, lubricating oils, phosphate ester based hydraulic fluids, Skydrol® hydraulic fluid and distilled water

02-Y-40A is qualified to MIL-PRF-23377 Type I Class C2 , RBO 125-014 + MCS9053 Type I Class 1 Grade 1

Product Compatibility: 02Y040A Yellow Epoxy Primer is compatible with these topcoat specifications: DMS 2115, MIL-PRF-85285, MIL-PRF-22750 + MMS 420

Note: PPG Aerospace recommends you check the most recent specification QPLs for updated information.

Surface Preparation and Pretreatments: Apply 02-Y-40A Yellow Epoxy primer over clean, dry, intact aluminum and composite surfaces. Treat aluminum surfaces with materials conforming to MIL-C-5541 or equivalent.

Mix ratio (by volume): 02Y040A (base component) 3 parts : 02Y040ACAT (catalyst component) 1 part

Instructions for Use: Stir or shake the base component (Part A) for no more than 10 minutes. Add the catalyst component to the base component. Mix by hand stirring, paint shaker or mechanical mixing. Do not shake or mix for longer than 10 minutes. Constant agitation during spray application is recommended.

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.


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.

Check out our Current Sales and follow us on FacebookLinkedIn, Instagram and Twitter


Label Value
Specifications MIL-PRF-23377 Type I Class C2
RBO 125-014
MCS9053 Type I Class 1 Grade 1
*Ensure all required specifications are listed when requesting a quote or placing an order, as not all specifications are tested at the time of production.


Title File
Technical Data Sheet Download