PPG Aerospace/PRC DeSoto® Class B Fuel Tank Sealant Semkit® 6oz PR1776MB2-60Z

PR-1776M Class B is a low density, high temperature aircraft integral fuel tank sealant. It has a service temperature range from -65°F (54°C) to 250°F (121°C), with very limited excursions up to 360°F (182°C).

This material is designed for fillet sealing of fuel tanks and other prolonged exposure to aircraft fuels both jet fuel and aviation gas, and will resist limited contact to diphosphate ester based hydraulic fluids. PR-1776M Class B is designed to be a direct replacement for PR-1776 Class B.