AST ACME, Inc. - Item # CS 3204, CS 3204 Aircraft Integral Fuel Tank Sealant
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CS 3204 Aircraft Integral Fuel Tank Sealant
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Item # CS 3204
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Item # CS 3204 CS 3204 Aircraft Integral Fuel Tank Sealant
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Meets AMS-S-8802 formerly MIL-S-8802F, Type II.
CS 3204 h a fuel resistant sealant for use on integral fuel tanks and pressurized cabins as well as other areas subject to contact with aircraft fuels, lubricant, oils, water and/or weathering.
CS 3204 is a two-part polysulfide base compound which cures at room temperature to a flexible, resilient rubber with excellent adhesion to aluminum, magnesium, titanium, steel, and numerous other materials, CS 3204 is designed to withstand the attack of sulphur compounds that are present in jet fuel. When mixed, CS 3204 Class A is a self leveling liquid. CS 3204 Class B is a thixotropic paste that will not flow or sag on vertical or overhead surfaces.
Specifications
·
Surface Preparation
·
Mixing Instructions
·
Cure
·
Storage Life
Specifications
Base Compound Color
Off-white (Class A)
Off-white (Class B)
Curing Agent Color
Gray (Class A)
Gray (Class B)
Mixed Color
Gray (Class A)
Gray (Class B)
Mixing Ratio by Weight
100:10 (Class A)
100:10 (Class B)
Mixing Ratio by Volume
100:8.3 (Class A)
100:8.3 (Class B)
Non Volatile Content
86% (Class A)
96% (Class B)
Viscosity-Base Compound (Brookfield RVF Spindle #6 @ 10 RPM)
250 poises (Class A)
Viscosity-Base Compound (Brookfield RVF Spindle #7 @ 2 RPM)
11000 poises (Class A)
Viscosity-Base Compound (Brookfield RVF Spindle #67 @ 10 RPM)
1000 poises (Class A)
1000 poises (Class B)
Vertical Flow
0.30 (Class B)
Ultimate Hardness, Shore A
50 (Class A)
50 (Class B)
Surface Preparation
To obtain good adhesion, the surfaces must be free of 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.
Cure
Specified application and cure schedules are based on the standard conditions of 77°F and 50% relative humidity. Increased temperature and relative humidity will reduce the work life and speed up the cure while reduced temperatures and relative humidity will extend the work life and slow the cure. Cure may be accelerated by heating up to 120°F. However care must be exercised to avoid the entrapment of solvent when heat is applied.
Storage Life
The storage life of CS 3204 is nine months when stored in the original unopened containers at temperatures below 80°F. Some change in work life, viscosity and curing rate may occur during this period. However, such changes are slight and in no way affect the end performance of the product.
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AST Acme, Inc.
| 728 South 13th Street | Louisville, Kentucky, USA 40210
Phone: 502-583-8355 | Fax: 502-583-2290 | E-mail:
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