Specialty Products

Pres-On SB Series Silicone Setting Blocks are made of commercial grade solid silicone rubber and are available in a range of material thicknesses and sizes.


Products Details

  • Technical Specs
  • Product Highlights
  • Applications

Product Range 
Thickness1.6mm - 12.4mm (1/16” - 1/2”)
Gauge Tolerance+/- 3%
PatternSmooth both sides
TestTypical ValueUnitsASTM Method
Hardness80 +/-5Shore “A” DurometerD2240
Tensile Strength700PSID412
Tear Strength80PPID624

  • High-strength silicone setting blocks are chemically compatible with all silicones tested to ASTM C1087*
  • Certified no color change or staining after independent testing*
  • Stop glass from cracking
  • Maintain the integrity of the glazing bead
  • Protect the IG from sash impact

*List of manufacturers and silicones tested available upon request. Refer to silicone manufacturer for compatibility information. Each project should be individually lab tested to confirm compatibility between Pres-On SB Series Setting Blocks, structural silicone, and all other adjacent materials.

SB Series Silicone Setting Blocks are recommended for installation inside the window sash – between the sash and insulated glass unit.

  • Insulated Glass Protection