Dow Silastic LS-2840 Datasheet Dow Silastic LS-2840

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  • Description for Dow Silastic LS-2840

    Low compression set; excellent solvent/fluid resistance; retains properties over a wide temperature range.

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    Brand Silastic
    Chemical Resistance Fluid, Chemical Resistance: Solvent
    Application Type Mold-Making
    1 Part or 2 Part 1-Part
    Material Form Rubber-Crepe
    Industry Powertrain
    Manufacturer Dow
    Chemistry Silicone: Fluorosilicone rubber
    Cure Method Heat
    Cure Temperature (°C) 200
    Cure Time (min) 240
    Color Off White
    High Temperature Resistance (°C) Excellent

  • Technical Data for Dow Silastic LS-2840

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    Overview
    • Chemical Resistance
      • Chemical Resistance - Fluid
      • Chemical Resistance : Relative Solvent Resistance - Solvent
    • Application Type
    • 1 Part or 2 Part
      • 1-Part
    • Material Form
      • Other - Rubber-Crepe
    • Industry
      • Powertrain
      • Industrial - Extruded and calendered goods
    • Chemistry
      • Silicone : Fluorosilicone - Fluorosilicone rubber
    • Cure Method
      • Heat
    • Color
      • Off-White - Off White
    • Brand
      • Silastic
    Specifications
    Cure Specs
    Cure Temperature (°C) 200 Test Method
    Cure Time (min) 240 Test Method
    Bond Strength
    Tear Strength (piw) 152 (ppi) Test Method
    Tensile Strength (psi) 1,470 Test Method
    Material Resistance
    High Temperature Resistance (°C) Excellent
    Hardness
    Shore A Hardness 38 Test Method
    Elongation (%) 5 Test Method
    Other Properties
    Specific Gravity 1.430 Test Method
    Flash Point (°F) 213.8
    Business Information
    Shelf Life Details When stored at or below 50°C (122°F) in the original unopened containers, this product has a usable life of 36 months from the date of production.
    Shelf Life Type from the date of production
    Shelf Life (mon) 36

  • Best Practices for Dow Silastic LS-2840

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  • Comparable Materials for Dow Silastic LS-2840

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    Spec Engine® Results

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Cure Temperature Test Methods
Cure Temperature Cure Time Test Method
200°C Post cure
Cure Time Test Methods
Cure Time Test Method
240 min Post cure
Tear Strength Test Methods
Tear Strength Test Method
152 (ppi) ASTM D624, Tear B
Tensile Strength Test Methods
Tensile Strength Test Method
1,470 psi ASTM D412 DIE C
Elongation Test Methods
Elongation Test Method
5 % ASTM D412 DIE C
Shore A Hardness Test Methods
Shore A Hardness Shore Hardness Test Method
38 Hardness/Durometer Test Method
Specific Gravity Test Methods
Specific Gravity Test Method
1.430 ASTM D792