PR-1440 A类是由两部分组成，二氧化锰固化聚硫化合物。未固化的材料是适合应用于厚度达25密耳的刷子。

特征

使用温度范围为-54°C（-65°F）至121°C（250°F），优势还会高达135°C（275°F）

该材料被设计为在燃料箱和其他飞机机身密封应用的紧固件的刷密封。

固化后的密封胶具有能长时间保持在两个喷气燃料和航空燃气后优异的弹性性能。

它在室温下固化，以形成具有优良粘合性通用飞机基板的弹性密封胶。

本产品符合众多生产商的标准要求 。

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.