PPG PR1428 A-1/2 Access Door Sealant
它的工作温度范围为-65°F（-54°C）至250°F（121°C），间歇性偏移高达275°F（135°C）。该材料设计用作通道门密封剂或用于现场成型（FIP）垫圈的制造。
PR-1428 A类是两部分二氧化锰固化的多硫化合物。 未固化的材料适合用刷子涂覆，厚度可达25密耳。它在室温下固化，形成对普通飞机基板的可移除密封。
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PPG PR1428 A-1/2 Access Door Sealant
Its operating temperature range is -65°F (-54°C) to 250°F(121°C), with intermittent excursions up to 275°F (135°C). Thismaterial is designed to be used as a sealant for access doors or inthe manufacture of Form-in-Place (FIP) gaskets.
PR-1428 Class A is a two-part manganese dioxide solidifiedpolysulfide compound. Uncured materials are suitable for brushapplication and can be up to 25 mils thick. It cures at roomtemperature to form a removable seal to common aircraftsubstrates.
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