PR-1784 Class B, Windshield and Canopy Sealant
PR-1784 Class B is a fast-curing aircraft windshield and canopy sealant. It has a service temperature range of -43°C (-45.4°F) to 120°C (248°F). This material is designed for fillet sealing of properly prepared glass, polycarbonate, acrylic and other aircraft sealing applications. PR-1784 Class B is a two-part, manganese dioxide cured polysulfide.
Discover the Future of Flight
Have questions or need support for your aerospace project? Contact PPG’s aerospace team today for guidance and tailored solutions.
PR-1784 Class B is a fast-curing aircraft windshield and canopy sealant. It has a service temperature range of -43°C (-45.4°F) to 120°C (248°F). This material is designed for fillet sealing of properly prepared glass, polycarbonate, acrylic and other aircraft sealing applications. This product is specifically formulated to not craze substrates. PR-1784 Class B is a two-part polysulfide liquid polymer. The mixed, uncured material is a thixotropic paste that can be readily applied by extrusion/injection gun or spatula and does not flow from vertical or overhead surfaces. The cured sealant exhibits excellent resistance to UV and weather exposure and has excellent adhesion to common aircraft substrates.