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PR-1426 Quick Repair Fuel Tank Sealant. PPG Aerospace® Sealants
PR-1426 is a quick repair, aircraft integral fuel tank sealant. It has a service temperature range from -65°F (-54°C) to 250°F (121°C), with intermittent excursions up to 275F (135°C). This material is designed for fillet sealing of fuel tanks and other aircraft fuselage sealing applications. The cured sealant maintains excellent elastomeric properties after prolonged exposure to both jet fuel and aviation gas. PR-1426 is a two-part, dichromate cured polysulfide compound. The uncured material is suitable for application by extrusion gun or brush. This sealant cures at temperatures from 20°F (-7°C) upward to form a resilient sealant. It has excellent adhesion to common aircraft substrates when correctly primed with PR-1426 Adhesion Promoter.
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