Application: YD-9-21 fuel resistant ultra low density polysulfide sealant is a two component room temperature vulcanized sealant based on liquid polysulfide rubber. The density is 1.05~1.15 g/cm3. It is suitable for sealing aircraft fuel tank and fuselage. Long-term use temperature is -54℃~121℃, can be used at 182℃ for short time (about 6h).

Product category: Class B, subdivided into B-2 and B-4 according to the construction period.

Advantages: ◆Ultra-low density; ◆Excellent resistance to gasoline and kerosene; ◆Good adhesion to common surfaces such as aluminum alloy, polyurethane and epoxy primer; ◆Very low solvent content; ◆Excellent performance; ◆Mildew resistance grade ≤1.

Usage: 

The proportion of base paste to vulcanizing agent is 100 to (10-12) (weight ratio), base paste and vulcanizing agent after full mixing in proportion is a uniform paste with uniform color.

Conforms to: Q/YDLT 0029-2023; SAE AMS 3281