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AV-254 is a low viscosity urethane prepolymer grout and is applied in much the same manner as acrylamide grout, but has the advantages of being a one-component system. AV-254 Gelseal has superior strength and contains no acetone.
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Appearance:
Solids Content:
Viscosity (ASTM D-1638):
Flashpoint:
Corrosiveness: |
Amber liquid, slightly sweet odor
78%
340 cps @ 75°F
285°F (140.5°C)
Non-corrosive |
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• Gel time is 40 seconds at 70°F (pH@7). The gel time is independent of water/AV-254 Gelseal ratio between 6:1 and 10:1. At high water to polymer ratios the get time is considerably retarded. Gel time can be reduced by adding accelerator to the water side.
• No shrinkage was observed after one week at 70°F and relative humidity of 100%
• Influence of pH: No gelification in highly alkaline (pH>10) or strongly acidic (pH<3) media. The gel time increases with decreasing pH values.
• Cured material is resistant against normal sewer effluents. |
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AV-254 Gelseal is cured by the reaction with water. However, larger quantities of water can be absorbed in the reaction mass, and the properties of the cured product are therefore determined by the mix ratio. In the range of 5:1 to 9:1, a strong gel is obtained. |
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AV-254 Gelseal is sensitive to moisture and moderately sensitive to high storage temperatures. Therefore, we recommend long term storage at 40-80°F under dry conditions. Long term storage temperatures should not exceed 80°F. Once a pail has been opened, the useful life of the material is greatly reduced, and it should be used as quickly as possible.
AV-254 Gelseal should be properly removed from all application equipment due to the high risk of moisture contamination. Immediately after use, hoses and pumps can be cleaned with AV-208 Acetone or AV-284 Pump Wash. AV-254 Gelseal can be pumped using hand or air operated piston pumps.
A nitrogen blanket moisture barrier is added to the pail of AV-254 Gelseal to retard premature catalization of resin in the pail due to humidity. |
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(Requires Acrobat Reader ) |
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This product contains Toluene Diisocyanate (TDI). It should be used only in well ventilated areas in order to keep the vapor concentration low. Eye contact and repeated skin contact should be avoided. Normal protective clothing such as gloves and goggles are recommended. A self-contained breathing apparatus should be worn in confined spaces where there is little ventilation and TDI vapors are likely to be high.
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Immediately flush eyes with water for 15 minutes. Get immediate medical attention.
Wash affected area with soap and water. Remove contaminated clothing.
Remove to fresh air. If breathing is difficult, get medical attention.
Drink 2 glasses of water. Call a physician
Never give anything by mouth to an unconscious or convulsing person.
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The data, information and statements contained herein are believed to be reliable, but are not construed as a warranty or representation for which Avanti International assumes any legal responsibility. Since field conditions vary widely, users must undertake sufficient verification and testing to determine the suitability of any product or process mentioned in this or any other written material from Avanti for their own particular use. NO WARRANTY OF SUITABILITY OR FITNESS FOR A PARTICULAR PURPOSE IS MADE. In no case shall Avanti International be liable for consequential, special, or indirect damages resulting from the use or handling of this product.
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