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

This aircraft fuel tank sealant is designed for high-temperature applications, with a service range from -65°F to 250°F, and can withstand brief exposure up to 360°F. It is suitable for sealing fuel tanks and is compatible with jet fuel, aviation gas and certain hydraulic fluids. It is designed as a replacement for PR-1776 Class B.

WARNING: This product can expose you to chemicals including titanium dioxide (airborne, unbound particles of respirable size), which is known to the State of California to cause cancer. For more information visit www.P65Warnings.ca.gov.

Overview

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 applications involving prolonged exposure to aircraft fuels, including jet fuel and aviation gasoline. It also provides resistance to limited contact with phosphate ester-based hydraulic fluids.

PR-1776M Class B is designed to be a direct replacement for PR-1776 Class B.

Features & Benefits

• Low-density formulation helps reduce aircraft weight
• Two-part, manganese dioxide-cured modified polysulfide compound
• Paste consistency suitable for fillet sealing
• Meets AMS 3281 and Boeing BMS 5-45 specifications
• Provides reliable, long-lasting fuel sealing
• Maintains strength and flexibility in demanding fuel environments
• Designed to meet stringent aerospace and military requirements

Specifications

• Series: PR-1776M Class B
• Product Type: Low-Density Fuel Tank Sealant
• Manufacturer: PRC-DeSoto (PPG Aerospace)
• Container Size: 6 oz
• Container Type: Semkit®
• Application Time: Class B-2 – approximately 2 hours
• Color (Mixed): Beige
• Compliance: AMS 3281 Type I Class B-2 and Boeing BMS 5-45 Class B-2