PR-705 Fuel Tank Channel Sealant. PPG Aerospace® Sealants
PR-705 is a non-curing fuel tank channel sealant. It has a service temperature range of -65°F (-54°C) to 220°C (104°C). This material is designed for sealing aircraft fuel tanks utilizing a channel/groove design with gaps up to 5 mils wide. The material offers excellent resistance to water and hydrocarbon aircraft fuels like JP-4 or JP-8. PR-705 is a one-part, polysulfide compound. The material is a heavy, putty-like compound suitable for application by high pressure injection gun.