RX1-09-06125

Flamemaster Chemseal CS 3204 Class B-1/2 is a standard-density, two-part manganese-dioxide-cured polysulfide sealant for aerospace fuel tank and fuselage sealing applications. Supplied in a black pint-kit format, it is intended for professional maintenance and repair use where a flexible, fuel-resistant sealant is required.

The Class B material is a thixotropic, low-sag paste suitable for application by extrusion gun or spatula. Flamemaster identifies CS 3204 Class B for sealing and repair of integral fuel tanks, cabin-pressure sealing and aerodynamic smoothing, as well as joints and seams in fuel and non-fuel areas.

• Manufacturer: Flamemaster
• Manufacturer part numbers: CS3204B1/2 BLK PT; CS3204B1/2-PT-BK
• Reference specification: AMS-S-8802
• Two-part polysulfide sealant
• Mix ratio by weight: 100:10, base to curing agent
• Minimum application time: 30 minutes at 25 °C and 50% relative humidity
• Typical tack-free time: 6–8 hours at 25 °C and 50% relative humidity
• Pint kit; application nozzle not included

Use in accordance with the current Flamemaster technical data sheet and safety data sheet, including applicable maintenance data and local handling requirements.