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EMSEAL AST Hi-Acrylic

  • AST is a self-adhering foam tape impregnated with water-based acrylic-modified asphalt emulsion
  • It is an excellent alternative to butyl tape & open-cell polyurethane foam strips
  • Will not dry out and become hard and brittle
  • UV-stable
  • Highly resistant to bugs and vermin
  • Will not extrude from between joints like caulk or butyl tapes
  • Conforms to contours and fills gaps
  • Maintains a seal during thermal expansion and contraction of building
    panels
  • Excellent compressibility and recovery (minimal compression set)
  • Good thermal and sound insulator
  • No shrinkage or blow-out due to closed-cell breakage
  • Supplied with self-adhesive on one side. After removal of packaging,
    material begins gradual expansion – more slowly in cold weather than in hot.


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SUPPLIED SIZE EXPANDED SIZE LF/BOX REELS PER BOX REEL LENGTH
1/4” x 1” 1” x 1” 511.68 LF 26 19.7”
3/8” x 1” 1 1/2” x 1” 314.88 LF 24 13.1”

PROPERTY VALUE TEST METHOD
BASE MATERIAL OPEN CELL, HIGH DENSITY, POLYURETHANE FOAM N/A
IMPREGNATION ACRYLIC-MODIFIED ASPHALT N/A
COLOR BLACK N/A
TENSILE STRENGTH 21 PSI MIN (145 kPa) ASTM D3574
ELONGATION - ULTIMATE 150% MIN ASTM D3574
TEMPERATURE RANGE
HIGH-PERMANENT
HIGH-SHORT TERM
LOW
185°F (85°C)
203°F (95°C)
-40°F (-40°C)
ASTM C711
SOFTENING POINT 140°F MIN (60°C) ASTM D816
UV RESISTENCE EXCELLENT
MILDEW RESISTENCE EXCELLENT
RESISTENCE TO AGING EXCELLENT
BLEEDING
-40°F TO 180°F
(-40°F TO 85°F)
BLEEDING
-40°F TO 180°F
(-40°F TO 85°F)
COMPRESSION SET
70°C 50% RH AFTER 72HRS
3 % MAX ASTM D3574
THERMAL CONDUCTIVITY THERMAL CONDUCTIVITY ASTM C518
LOW. TEMP. FLEXIBILITY
32°F TO -10°F
(0°C TO -23°C)
NO CRACKING OR SPLITTING ASTM C711
WATER VAPOR TRANSMISSION AT 25%
COMPRESSION
0.011 PERMS ASTM C355-64

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Rights Reserved


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