Like for like - PR-1440
PPG PR-1440 is an aircraft integral fuel tank sealant which has a service temperature range from -54°C (-65°F) to 121°C (250°F), with intermittent excursions up to 135°C (275°F).
PR-1440 Class A is designed for brush sealing of fasteners in fuel tanks and other aircraft fuselage sealing applications.
PR-1440 Class B is designed for fillet sealing of fuel tanks and other aircraft fuselage sealing applications.
Within both classes, the cured sealant maintains excellent elastomeric properties after prolonged exposure to both jet fuel and aviation gas.