PPG Aerospace - PRC-Desoto PR-1750 Class B - 2 hour application life - Fuel Tank Sealant PR-1750 Class B is an aircraft integral fuel tank sealant. It has a service temperature range from -65F (-54C) to 250F (121C), with intermittent excursions up to 360F (182C). 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-1750 Class B is a two part, manganese dioxide cured polysulfide compound. The uncured material is a low sag, thixotropic paste suitable for application by extrusion gun or spatula. It cures at room temperature to form a resilient sealant having excellent adhesion to common aircraft substrates.Approvals/References/SpecsSAE Specification: AMS3276 Class B-2US Military: MIL-S-83430 Class B-2
