RX1-09-06130

Flamemaster Chemseal CS 3204 B-2 is a standard-curing, two-part polysulfide aerospace sealant supplied as a black quart kit. It is intended for fuel-tank and fuselage sealing tasks, including integral fuel tanks, cabin-pressure sealing and aerodynamic smoothing where a flexible, fuel- and fluid-resistant sealant is required.

The Class B formulation is a thixotropic, low-sag paste designed for application by extrusion gun or spatula. After curing, the material forms a flexible, resilient rubber seal.

• Manufacturer part numbers: CS3204B2 BLK QT; CS3204B2-QT-BK
• Class: B-2
• Nominal application life: 2 hours at 25°C and 50% relative humidity
• Mix ratio by weight: 100:10, base to curing agent
• Typical cure to 30A hardness: less than 48 hours at 25°C and 50% relative humidity
• Manufacturer-stated cured service-temperature range: -54°C to +121°C, with excursions to +182°C
• Related specification reference: AMS-S-8802

Use in accordance with the applicable maintenance data, process instructions and current product safety documentation. Manufacturer documentation is available from Flamemaster: CS 3204 Class B Technical Data Sheet and CS 3204 Part B Class B-2 Safety Data Sheet.