PPG Aerospace® PR-1776M B-2 Brown BMS 5-45H Class B-2 Spec Low Weight Fuel Tank Sealant - 6 oz 654-SemKit

PR-1776M Class B is a lightweight, high-temperature aircraft primary fuel tank sealant. Its service temperature range is -65°F (54°C) to 250°F (121°C) with occasional use up to 360°F (182°C). This product is used for fillet sealing of fuel tanks and other prolonged exposure to aviation fuels both jet fuel and aviation gas, and though it meets limited contact diphosphate ester based hydraulic fluids. PR-1776M Class B is meant to be a direct replacement for PR-1776 Class B.