PPG Aerospace® PR-717 Tack Free Coating
PR-717 is designed for application over uncured polysulfide and polythioether sealants to produce a tack-free like condition. It has a temperature range from -65°F (-54°C) to 250°F (121°C), with intermittent excursions up to 275°F (135°C). This material significantly reduces the risk of foreign objects and debris (FOD) from adhering to the sealant's surface during its cure cycle.
PR-717 is a low viscosity liquid suitable for application by brush or a conventional spray method.