DeSoto 833K086 High Solids Integral Fuel Tank Coating AMS-C-27725 TY I

PPG DeSoto® 833K086 is a high solids integral fuel tank coating that protects the interior of an aircraft fuel tank against corrosion from fuel contaminants. Chemically cured, it provides maximum protection against water, salt water, aircraft fuels, hydraulic fluids, engine oils and dilute acid solutions. It has excellent adhesion to aluminium and is compatible with fuel tank sealants; service temperature −54 to 177 °C (−65 to 350 °F). Colour: yellow.

Specifications

• Qualified to: AMS-C-27725 Type 1, DHMS C4.06 Type 1 Class A Grade B, DMS 1850 Types 1, 3, 4 and 5 Composition C, GAMPS 3102 Type 1, SP-J-513-M-0021
• Compatible sealants: AMS 3265, AMS 3276, AMS 3277, AMS 3281, AMS-S-8802 and others

Mixing and Application

• Mix ratio by volume: 833K086 base 2 : 930K088 activator 1; no induction time; pot life 4 hours at 21–25 °C
• Over aluminium treated to MIL-C-5541 or equivalent; apply at 15–30 °C and 10–90% RH in one or two medium coats to 20–30 µm
• Theoretical coverage 20 m²/L at 25 µm; dry film density 1.48 g/cm³

Drying Times (22–28 °C)

• Tack free 2½ hours; dry hard 6–8 hours; full cure 21 days
• Accelerated (60 °C): after a 2 hour flash-off, dry hard 3–4 hours, full cure 24–36 hours

Storage

• Mixed VOC 420 g/L; shelf life 12 months to most OEM specifications, 24 months to PRC-DeSoto standard; 5–35 °C