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PR1773A2 is a polysulfide-based, two-part manganese cured sealant. Typically applied by a brush, the fluid can be applied around fasteners and has the advantage of not dripping from vertical or celling surfaces. PR1773A2 has especially low adhesion properties. PR1773A2 is usable on many parts of aircraft, but is commonly used on access doors. This sealant also boasts a high heat resistance as well as corrosion ingredients. Works well with aluminum.