Mile High Foam XL® is a resilient, cross-linked polyethylene backer rod used as a backing material for hot and cold applied sealants. Due to its chemical make up, it can take high temperature sealant installations. Mile High Foam XL® controls the depth of the sealant installation and ensures cross-sectional hour-glass configuration. No bond breaker is required. Product has been tested and passed the heat resistance requirements of ASTM D 5249 at a certified independent laboratory.
For use in highway joints, parking decks, runways, driveways, parking lots and saw cut expansion joints.
Do not puncture, over compress or stretch Mile High Foam XL® during installation.
Composition and Materials:
Mile High Foam XL® is a round, light brown, resilient, extruded cross-linked closed cell polyethylene backer rod with a water resistant outer skin. It is compatible with most known hot and cold applied sealants such as rubber asphalt, coal tar-rubber polymer thermoplastic compounds, urethane, silicone, acrylic, butyl, polysulfide and latex.
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- Density (nominal): 1.3 - 2 lb/ft³ ASTM D 1622
- Compression Deflection: <15 ASTM D 5249
- Compression Recovery: >90 ASTM D 5249
- Tensile Strength PSI: >20 PSI ASTM D 1623
- Temperature Range: −90°F to 410°F ASTM D 5249
- Water Absorption: ‹0.03 g/cm³ ASTM C 1016 - Proc. B