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Elmet Technologies

Sika Sikasil® 728 NS Non-sag, ultra low modulus, highway/parking garage, neutral cure silicone sealant
Categories: Polymer; Adhesive; Thermoset; Silicone; Silicone, RTV, Adhesive/Sealant Grade

Material Notes: Sikasil 728 NS is a high performance, non-sag. one-component , ultra low modulus elastomeric, neutral cure silicone sealant. Meets the requirements of ASTM D-5893: ASTM C-920, Type S, Grade NS, Class 100/50, Use NT, T, M, G, A, O with ultra low Shore Hardness: TT-S-00230C, Type II, Class A; Class A.

Where to Use: Construction Application:

  • Highway joints
  • Bridges
  • Stadiums
  • Parking garages
  • Plaza decks
  • Driveways
  • Decks
  • Expansion joints
  • Saw cut joints Substrate:
    • Concrete, steel, glass, aluminum, ceramic, masonry, brick, stone and granite.
    Advantages:
    • Durable
    • Ideal for cold climates
    • Excellent flexibility for extreme high and low temperature conditions
    • Excellent flexibility for dynamic joint movement
    • Bonds to most substrates without priming; best performance obtained in horizontal joints when primed
    • Ready to use, labor cost reduction
    • Non sag, excellent for vertical joints
    • All season ease of application
    • Excellent for use on all types of concrete joints
    • Jet fuel resistant
    • Resistant to road salts

    Information provided by Sika Corporation.

  • Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
     
    Physical PropertiesMetricEnglishComments
    Volatile Organic Compounds (VOC) Content 21 g/l21 g/l1.64% by wt
     
    Mechanical PropertiesMetricEnglishComments
    Hardness, Shore A 5.0 - 105.0 - 10ASTM C-661 & ASTM D-2240
    Hardness, Shore OO 5050ASTM C-661 & ASTM D-2240
    Tensile Strength 1.21 MPa175 psiASTM D412
    Tensile Stress at Strain 0.241 MPa
    @Strain 100 %
    35.0 psi
    @Strain 100 %
    ASTM D412
    Elongation at Break 1000 %1000 %ASTM D412
    Peel Strength 7.01 kN/m40.0 pliASTM C794
     
    Thermal PropertiesMetricEnglishComments
    Maximum Service Temperature, Air 177 °C350 °F
    Minimum Service Temperature, Air -62.2 °C-80.0 °F
     
    Processing PropertiesMetricEnglishComments
    Cure Time 15.0 - 25.0 min0.250 - 0.417 hourSkin-over Time
     1440 min
    @Thickness 1.59 mm
    24.0 hour
    @Thickness 0.0626 in
    Tack-Free Time 30.0 - 40.0 min0.500 - 0.667 hourASTM C679
    Shelf Life 12.0 Month
    @Temperature <=32.0 °C
    12.0 Month
    @Temperature <=89.6 °F
    in original unopened cartridge
     
    Descriptive Properties
    ColorLimestone and Charcoal Gray

    Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

    PSIKA950 / 209857

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