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Metal adhesives

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Sika Sikasil® WS-295 FPS Neutral cure, field pigmentable silicone sealant
Categories: Polymer; Adhesive; Thermoset; Silicone; Silicone, RTV, Adhesive/Sealant Grade

Material Notes: Sikasil-WS 295 FPS sealant is a field pigmentable, no bleed, one component plus color pack, non-sag elastomeric, neutral cure silicone sealant for use in most common weatherproofing applications on a wide variety of materials. Meets the requirements of ASTM C-920, Type S, Grade NS, Class 50, Use NT, M, G, A, O; TT-S-00230C, Type II, Class A; CAN/CGSB-19.13-M87, AAMA 802.3 Type II, AAMA 803.3, AAMA 805.2, AAMA 808.3

Where to Use: Sikasil-WS 295 FPS silicone sealant has been specifically designed for:

  • As a weatherseal in nonstructural glazing applications including gap, toe and heel beads
  • As a weatherseal in glass to glass butt joint glazing.
  • Sealing expansion and control joints in precast concrete panels and metal curtain walls.
  • Perimeter sealing of doors, windows and other building components.
  • Adhering stiffeners to building panels.
  • Excellent for use in unitized curtain wall systems.
Advantages:
  • One-part plus color pack
  • Unaffected by most atmospheric conditions
  • Non-staining
  • Joint movement ±50%
  • Excellent adhesion
  • Excellent gunnability in all temperatures

Information provided by Sika Corporation.

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Physical PropertiesOriginal ValueComments
Volatile Organic Compounds (VOC) Content 37 g/l
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore A 25ASTM C661
Tensile Strength 200 psiASTM D412
Tensile Stress at Strain 55.0 psi
@Strain 100 %
ASTM D412
Elongation at Break 700 %ASTM D412
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 168 - 336 hourASTM C679
Tack-Free Time 50.0 min
Working Life 20.0 - 30.0 minTool/Work Time (Initial Skin)
Shelf Life 12.0 Month
@Temperature <=27.0 °C
in original unopened cartridge
 
Descriptive Properties
ColorsWhite, Colonial White, Aluminum, Limestone, Black, Bronze, Medium Bronze

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PSIKA949 / 209856

Metal adhesives

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