PR-1829 Class B is a rapid curing aircraft windshield
and canopy sealant. It has a service temperature
range from -80°F (-62°C) to 320°F (160°C), with
intermittent excursions up to 420°F (216°C). This
material is designed for fillet sealing of glass, polycarbonate, acrylic and other aircraft sealing applications.
The product contains no organic solvents and does
not craze substrates. The cured sealant exhibits
excellent resistance to UV and weather exposure.
PR-1829 Class B is a two-part, epoxy cured
Permapol® P-3 polythioether compound. The
uncured material is a low sag, thixotropic paste,
suitable for application by extrusion gun or spatula.
Unlike standard polysulfide windshield sealants, it
can cure at low temperatures and is unaffected by
changes in relative humidity. This sealant has excellent adhesion to common aircraft substrates.
