PR-1440 A類是由兩部分組成，二氧化錳固化聚硫化合物。未固化的材料是適合應用于厚度達25密耳的刷子。

特征

使用溫度范圍為-54°C（-65°F）至121°C（250°F），優勢還會高達135°C（275°F）

該材料被設計為在燃料箱和其他飛機機身密封應用的緊固件的刷密封。

固化后的密封膠具有能長時間保持在兩個噴氣燃料和航空燃氣后優異的彈性性能。

它在室溫下固化，以形成具有優良粘合性通用飛機基板的彈性密封膠。

本產品符合眾多生產商的標準要求 。

PR-1440 Class A is a two-part, manganese dioxide cured polysulfide compound. The uncured material is suitable for application by brush in thickness up to 25 mils.

Features

Has a service temperature range from -54°C (-65°F) to 121°C (250°F), with intermittent excursions up to 135°C (275°F).

This material is designed for brush sealing of fasteners in fuel tanks and other aircraft fuselage sealing applications.

The cured sealant maintains excellent elastomeric properties after prolonged exposure to both jet fuel and aviation gas.

It cures at room temperature to form a resilient sealant having excellent adhesion to common aircraft substrates.

This product is qualified to several manufacturers’ specifications.