Access Door Sealants / PPG Aerospace
Non-chromate access door sealant supplied in 100 ml Semkit format.
Documents
Request the relevant product documents through ADG so technical, safety and traceability requirements can be confirmed.
Product information
PPG PR1428B-2 is a two-part, low-adhesion polysulphide sealant designed for applications requiring a removable seal. It is commonly used for fuel tank access doors, form-in-place gaskets, and protective sealing of electrical components.
Full product record
PPG PR1428B-2 is a two-part, low-adhesion polysulphide sealant designed for applications requiring a removable seal. It is commonly used for fuel tank access doors, form-in-place gaskets, and protective sealing of electrical components.
This sealant is a manganese dioxide-cured polysulphide compound supplied as a thixotropic, low-sag paste, allowing controlled application using standard extrusion equipment or hand tools. It operates within a service temperature range of -54°C to 121°C, with intermittent exposure up to 135°C, maintaining flexibility and sealing performance under typical operating conditions. Once cured, it forms a flexible seal that adheres to common aerospace substrates while remaining easy to remove when required. It provides resistance to aviation fuels, moisture, and contaminants, making it suitable for access panels, gasket formation, and protection of electrical components.
Specifications and approvals should be confirmed against the current TDS, AMM or OEM documentation before use.