PPG Aerospace® PR-1776M B-1/2 Brown BMS 5-45H Class B-2 Spec Low Weight Fuel Tank Sealant - Pint Kit

The PPG Aerospace® PR-1776M B-1/2 is a two-part, low-density, manganese dioxide–cured polysulfide sealant, supplied in a pint kit, designed to meet BMS 5-45H, Class B-2 specifications. Engineered for integral fuel tank applications where weight savings are critical, this sealant provides excellent adhesion, fuel resistance, and long-term flexibility while minimizing added structural weight.

The B-1/2 class designation offers a moderate work life with controlled cure, making it suitable for OEM assembly and MRO fuel tank repairs. Once cured, PR-1776M B-1/2 forms a resilient, flexible seal capable of withstanding aviation fuels, oils, hydraulic fluids, and environmental stresses, ensuring both structural integrity and reduced weight in aircraft fuel systems.

Key Technical Features:

1. Product: PR-1776M B-1/2 Low Weight Fuel Tank Sealant
2. Manufacturer: PPG Aerospace® / PRC-DeSoto®
3. Packaging: Pint Kit (two-part system)
4. Color: Brown
5. Chemistry: Manganese dioxide–cured polysulfide (low density)
6. Specification: BMS 5-45H, Class B-2
7. Function: Fuel tank sealing with reduced weight
8. Provides resistance to aviation fuels, oils, hydraulic fluids, and environmental exposure
9. Ensures durability, flexibility, and long-term adhesion
10. Ideal for OEM production and MRO fuel tank applications where weight savings are critical