Two-part, manganese dioxide-cured modified polysulfide sealant providing up to 20% weight savings for aircraft integral fuel tanks.
| Pack Size | Price / Unit | Stock | Shelf Life | Batch No | Color |
|---|---|---|---|---|---|
| Base Unit | *** | Limited Stock — 100 Available | 14 Sep 2026 | — | Brown / Dark Gray (Mixed) |
PPG PR-1776M Class B is a specialized, low-density, high-temperature aircraft integral fuel tank sealant engineered for weight-critical aerospace configurations.
Formulated as a direct, weight-saving replacement for legacy PR-1776 Class B compounds, it utilizes a manganese dioxide-cured Permapol P-5 modified polysulfide base.
The mixed material forms a low-sag, thixotropic paste ideal for fillet sealing fuel tanks and fuselage joints.
It delivers remarkable resistance to dynamic aviation fuels and gases, handles intermittent high thermal exposures, and maintains an elite elastomeric bond without peeling or tearing over time.
| Type / Chemistry | 2-Part Manganese Dioxide Cured Permapol P-5 Modified Polysulfide |
| Format | 100ml (654) Semkit Cartridge |
| Application Time | 30 Minutes (1/2 Hour window at 25°C) |
| Service Temperature Range | -65°F to 250°F (-54°C to 121°C) with intermittent excursions up to 360°F (182°C) |
| Shelf Life | 9 Months (270 Days) from date of packaging |
| Military Specs | Qualified to SAE AMS 3281 Type 1 Class B-1/2 |
| Boeing Specs | : Qualified to BMS 5-45 Class B-1/2 Form |