PR-1764 Class B is an electrically conductive, corrosion inhibitive sealant. It has a service temperature
range from -67°F (-55°C) to 250°F (121°C), with
intermittent excursions up to 360°F (182°C).
The cured sealant maintains electrical continuity in
aircraft applications. This material provides excellent
long-term EMI/RMI protection. The product is also
corrosion inhibitive and protects against the common
causes of corrosion on aluminum alloys or between
dissimilar metals. The cured sealant is resistant to
prolonged exposure to both jet fuel and aviation gas.
PR-1764 Class B is a two-part, nickel filled, manganese dioxide cured, Permapol® P-3 polythioether compound. The uncured material is a low sag, thixotropic
paste suitable for application by extrusion gun or
spatula. This sealant has excellent adhesion to common aircraft substrates when correctly primed with
PR-148 Adhesion Promoter.
The following tests are in accordance with AMS 3266
Class B and other OEM specification test methods.
