High Density Silicone (GEOSEAL150)
PRODUCTS

APPLICATION
GEOSEAL150 consists of two-component high density silicone.
It is qualified for Fire, Ventilation, Flood, Compartment Pressurization, and Radiation
seals for nuclear power plant.
PRODUCT PERFORMANCE
ClassificationFeatureFire Seal2~3 hours (ASTM E814, UL1479)Flood Seal≤0.01 gallon/min (21.7 psi)Compartment Pressurization Seal≤0.001 cfm/ft · psid (5/10, 24/48 psid, 360°F)Ventilation SealYesRadiation Seal1 × 10⁶ GySurface Burning CharacteristicsClass ‘A’ (NFPA/IBC)
STANDARD
ClassificationFeatureColorA : Grey, B : Off WhiteMain ComponentSiliconePackingA: 20kg, B: 20kg (40kg/SET)Mixing Ratio1:1 (A&B)Pot time30 minutesCuring Time24 hoursSpecific Gravity (after curing)Above 2.24Service Temperature400°F (204°C)Shelf life12 monthsLimiting Oxygen Index57 (KS M ISO 4589-2)Thermal conductivity1.05 W/(m·K) (ASTM C1113)Volume Resistance1.98 × 10¹² Ω·cm (ASTM D257)Dielectric Breakdown Strength3.1 kV/mm (ASTM D149)Flame Resistance TestV-0 (UL94)HalogenFreeAsbestosFree
PROPERTIES
Uses
Sealing opening & penetration for Tray, Conduit, Electrical Bus Duct, and Pipe
Installation
Store the material at room temperature for 12 hours before work (Recommendation)
Clean surface of opening & penetration
Install Dam
First Mixing : Mix the material in each package of A & B for more than 5 minutes
Second Mixing: Mix the materials of A & B together after first mixing for more than 3 minute
Pouring, then remove dam and finish surfaces after 24 hours
Storage
Avoid direct sunlight and store it in the range of 5°Cto 60°C at a well-ventilated dry place
Caution
If it gets into your eyes, wash it with water immediately
Be careful not to touch children’s hands
Non-reusable products after opening.
*The data is for information purposes only, not available for design data.
