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Flamemaster CS-3204 B-2 Integral Fuel Tank Sealant from SkyGeek is a two-part fuel-resistant sealant that is designed for use on integral fuel tanks and pressurized cabins to seal small gaps and cracks. The sealant is resistant to aircraft fuels, lubricants, oils, water and weathering, making it the ideal choice for challenging flight conditions. The two-part polysulfide sealant cures to a flexible, resilient rubber at room temperature and is completely cured in 72 hours for less downtime.
Flamemaster CS-3204 B-2 Integral Fuel Tank Sealant has a paste-like consistency, so it’s easy to apply to the inside of the fuel tank. The two-part formula is pre-measured and ready to mix, reducing application times and speeding up maintenance procedures. The sealant has a gray color that matches most fuel tanks and unopened, the sealant has a nine-month shelf life. Once mixed and applied, the sealant has a 24-hour tack time to allow it to be worked into place. Sealant kits are sold individually, but volume pricing is available on qualifying bulk orders. A manufacturer’s certification may be added to any order for an additional charge.
Features
| Typical Properties | MIS-31868C | CS 3204 WT20 |
| Color: | ||
| Base Compound | Aluminum | |
| Curing Agent | Black | |
| Mixed | Aluminum | |
| Mixing Ratio: | ||
| Weight | 7.8/10:100 | 10/100 |
| Volume | N/A | 8.3/100 |
| Non Volatile | 75% | 80% |
| Viscosity Mixed | 100-180 PS.a | 116 PS.a |
Homogeneity | 11.4% ± 2% | 12.5% |
| Extrudability | Extrudable | Pass |
| Application Life | 5 grams min. | 90 grams |
| Squeeze Out Hardness (Shore A) | N/A | 20 hours |
| 120 Hrs. @24C ± 1C | 35 (min.) | 50 (min.) |
| 28 days @24C ± 1C | 50 (min.) | 60 (min.) |
| Shelf Life @ 28C± 1C | 6 months | 6 months |
| Flash Point | N/A | + 15C |
SURFACE PREPARATION
To obtain good adhesion, remove all traces of oil, wax, grease, dirt, or other contamination. Working in small area segments, wipe the surface using a clean rag doused in an oil free solvent. Before the solvent evaporates, wipe the surface dry with a second clean rag. Maintain a clean solvent supply by pouring the solvent on the washing cloth. CS 3204 will adhere tenaciously to most substrates providing the surface to be sealed is clean and sound.MIXING INSTRUCTIONS
CS 3204 Parts A and B are carefully matched at the time of manufacture to provide optimum performance when cured. Care should be taken to assure that Parts A and B are combined as recommended on the container label. When mixing pre-measured kits do not thin CS 3204 with solvents. Prior to combining with the Part A component, stir the Part B component until the contents of the container are uniform. Place all of the B component into the Part A container and continue stirring until a uniform gray color is achieved. There should be no white or black streaks in the properly blended material. Periodically scrape the sides and bottom of the container as well as the mixing tool to assure proper mixing. When using a mechanical mixer, avoid high speeds since the heat generated will reduce the application time of the mixed CS 3204. Violent stirring will also entrap air in the cured sealant.When mixing materials packaged in bulk or when only a small quantity is required, stir 10 parts by weight of the Part B component into 100 parts by weight of the Part A component. Be sure to stir the Part B prior to weighing out the required amount.
