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PS 890 Fuel Tank Sealant. PPG Aerospace® Sealants
PS 890 is an aircraft integral fuel tank sealant. It has a service temperature range from -55°C to 120°C, with intermittent excursions up to 135°C. The cured sealant maintains excellent elastomeric properties after prolonged exposure to both jet fuel and aviation gas. PS 890 is a two-part, manganese dioxide cured polysulfide compound. It cures at room temperature to form a resilient sealant having excellent adhesion to common aircraft substrates.
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