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Master Bond adhesives

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Sika Sikasil® 728 RCS Two-part, self-leveling, rapid cure, ultra low modulus, horizontal application, neutral cure silicone sealant
Categories: Polymer; Adhesive; Thermoset; Silicone; Silicone, RTV, Adhesive/Sealant Grade

Material Notes: Sikasil-728 RCS (Rapid Cure System) is a self-leveling, two-component, very rapid cure, ultra low modulus elastomeric, neutral cure silicone sealant. Exceeds the requirements of ASTM C-920, Type M, Grade P, Class 100/50, Use T, M, G, A, O; TT-S-00227E, Type I, and various AASHTO reports and state DOT approvals.

Where to Use: Construction Application:

  • Horizontal expansion joints
  • Highway and bridge joints
  • Saw cut joints - new and remedial
  • Plaza decks
  • Parking decks
  • Bridges
  • Airports
  • Stadiums
  • Driveways
Location:
  • Horizontal
  • Interior and exterior
  • Above grade or on grade
Substrate:
  • Concrete, steel, glass, aluminum, tile, ceramic, masonry, brick, stone and granite
Advantages:
  • No tooling, less labor
  • Excellent flexibility for extreme high and low temperature conditions
  • Excellent flexibility for dynamic joint movement
  • Bonds to most substrates without priming
  • Open to traffic in one hour
  • All season ease of application
  • Good contact/adhesion with hard to reach areas
  • Ideal for cold climates
  • Excellent for use on runways and tarmacs
  • 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 PropertiesOriginal ValueComments
Volatile Organic Compounds (VOC) Content 30 g/l2.4% by wt
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore A 4.0 - 6.0ASTM C-661 & ASTM D-2240
Hardness, Shore OO 45 - 55ASTM C-661 & ASTM D-2240
Tensile Strength 70.0 psiASTM D412
Tensile Stress at Strain 25.0 psi
@Strain 100 %
ASTM D412
Elongation at Break 725 %ASTM D412
 >= 1000 %Joint (a) (b); ASTM D-5329
Tensile Modulus 5.00 psi
@Strain 100 %
Joint (a) (b); ASTM D-5329
Peel Strength 30.0 plion aluminum, glass and concrete; ASTM C794
 
Thermal PropertiesOriginal ValueComments
Maximum Service Temperature, Air 350 °F
Minimum Service Temperature, Air -80.0 °F
 
Processing PropertiesOriginal ValueComments
Cure Time 1.00 hour19%
 10.0 minSkin-over Time
Tack-Free Time 25.0 min
Shelf Life 12.0 Month
@Temperature <=32.0 °C
in original unopened cartridge
 
Descriptive Properties
Colordark grayPart A
 Limestone and Charcoal GrayMixed
 whitePart B

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