PPG PR143 is a two-pack, ambient-curing chromated epoxy primer developed for the internal and external protection of aircraft. It offers excellent resistance to phosphate ester hydraulic oils, superior water resistance and adhesion, and excellent corrosion resistance.
Specifications
- Qualified to: AVN 7-003; BS2X33B; DOL 255; MSRR 9064; SP-J-513-A-0016 Type I Class A
- Meets the performance requirements of: MIL-P-23377 Type I; AIMS 04-04-001; AIMS 04-04-004
- Compatible primer/topcoat specifications: BS2X32+A2, BS2X34 A+B, SP-J-513-C-0083
Mixing and Application
- Mix ratio by volume: PR143 base 2 parts : ACT143 activator 1 part; T187 or T17 thinner to viscosity (approx. 1 part)
- No induction time; pot life 8 hours at 21–25 °C
- Apply at 15–35 °C and 30–85% RH in one wet cross coat to 15–25 µm (0.6–1 mil) dry film
- Theoretical coverage: 11 m²/L at 20 µm; colours yellow and green; <20 GU at 60°
Drying Times (23 °C)
- Dry to handle 40 minutes; dry to tape/mask 4 hours; hard dry 6 hours
- Overcoat 4–48 hours; full cure 7 days (3 hours at 70 °C, 1 hour at 125 °C)
Storage
- Base and activator: 24 months in unopened containers; thinners 10 years; 5–35 °C
| Color | Yellow or Green |
| Packing | 5 LT |