Fuel Tank Sealants / PPG Aerospace
Aircraft integral fuel tank sealant supplied as 100 ml Semkits in 24-box format.
Documents
Request the relevant product documents through ADG so technical, safety and traceability requirements can be confirmed.
Product information
PPG PR1776M B-1/2 is a low-density, two-part polysulphide sealant developed for aircraft fuel tank and fuselage sealing applications. It is designed for fillet sealing where fast application, reduced weight, and high-temperature performance are required.
Full product record
PPG PR1776M B-1/2 is a low-density, two-part polysulphide sealant developed for aircraft fuel tank and fuselage sealing applications. It is designed for fillet sealing where fast application, reduced weight, and high-temperature performance are required.
This sealant is a manganese dioxide-cured polysulphide compound based on Permapol P-5 technology. It is supplied as a thixotropic, low-sag paste, allowing controlled application using extrusion equipment or hand tools. It operates within a service temperature range of -54°C to 121°C, with intermittent exposure up to 182°C, maintaining flexibility and sealing performance under demanding conditions. Once cured at ambient conditions, it forms a durable, elastomeric seal with strong adhesion to common aerospace substrates. It retains its properties after exposure to aviation fuels and fluids, ensuring reliable long-term sealing. The low-density formulation delivers up to 20% weight reduction compared to conventional sealants, making it suitable for weight-sensitive applications. It also offers resistance to limited exposure to hydraulic fluids.
Specifications and approvals should be confirmed against the current TDS, AMM or OEM documentation before use.