PR-1776M Class B is a low density, high temperature air-craft integral fuel tank sealant. It has a service temperature range from -65°F (-54°C) to 250°F (121°C), with very limit-ed 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 excel-lent elastomeric properties after prolonged exposure to air-craft fuels both jet fuel and aviation gas, and will resist lim-ited 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 com-mon aircraft substrates. PR-1776M Class B is designed to be a direct replacement for PR-1776 Class B. The following tests are in accordance with AMS-3281 and BMS 5-45 specification test methods.

FUEL TANK SEALANT

Product Details

Manufacturer	PPG
Part Number	PR 1776 MB2
Pack Size	SEMKIT
Specification	PRC STD
Hazmat	NON HAZ

Availability

Under Lead Time (3–4 weeks)