PR-1776M B類低密度，耐高溫飛機整體燃料密封膠。

PR-1776M Class B is a low density, high temperature aircraft integral fuel tank sealant.

特點

Features

工作溫度范圍從-65°F（-54℃）至250°F（121℃），間歇便宜至360°F（182℃）。

這種材料是專為圓角密封油箱和其他飛機機身密封應用。盡可能多節約20％重量，每單位體積，超過傳統密封較

長期接觸航空噴氣燃料和天然氣后，固化的密封劑仍保持彈性。

會抵制有限接觸二磷酸托架液壓液。

PR-1776M B類是由兩部分組成，二氧化錳固化PERMAPOL?P-5改性聚硫。未固化的材料是一種低弧垂，觸變性膏狀適合配合擠壓槍或抹刀使用。

室溫下固化，形成有彈性的密封劑，對常見的飛機基板具有優異的粘附性。PR-1776M B級的設計是直接替換PR-1776 B類。

It has a service temperature range from -65°F (-54°C) to 250°F (121°C), with very limited excursions up to 360°F (182°C).

This material is designed for fillet sealing of fuel tanks and other aircraft fuselage sealing applications. It offers as much as a twenty percent weight savings, per unit volume, over traditional sealants used for these purposes.

The cured sealant maintains excellent elastomeric properties after prolonged exposure to aircraft fuels both jet fuel and aviation gas, and will resist limited contact to diphosphate ester based hydraulic fluids.

PR-1776M Class B is a two-part, manganese dioxide cured Permapol? P-5 modified polysulfide. The uncured material is a low sag, thixotropic paste suitable for application by extrusion gun or spatula.

It cures at room temperature to form a resilient sealant having excellent adhesion to common aircraft substrates. PR-1776M Class B is designed to be a direct replacement for PR-1776 Class B.