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www.emseal.<strong>com</strong><br />
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<strong>EMSEAL</strong><br />
<strong>EMSEAL</strong><br />
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®<br />
Manufacturer:<br />
Product Description<br />
• IST is a preformed expanding foam<br />
tape sealant. It is made by<br />
impregnating a resilient, high-density,<br />
open-cell polyurethane foam with<br />
water-based, stabilized acrylics. It<br />
is supplied factory pre<strong>com</strong>pressed<br />
and packaged in reel form with<br />
self-adhesive backing for use in<br />
preformed joints subject to expansion<br />
and contraction movement, and<br />
also as gaskets in tightly squeezed,<br />
non-moving joints.<br />
After removal of packaging, material<br />
begins gradual expansion-slowly<br />
in cold weather, faster in<br />
hot.<br />
Sealing ability is a function of the<br />
characteristics of the open cell foam<br />
structure, the level of impregnation,<br />
and the degree of <strong>com</strong>pression or<br />
density which can be varied to suit<br />
specific applications. For example,<br />
lower <strong>com</strong>pression serves for dust,<br />
driving snow, etc., while progressively<br />
greater <strong>com</strong>pression is required for<br />
vertical run-off water, ponding water,<br />
etc.<br />
IST is supplied pre<strong>com</strong>pressed to<br />
less than the nominal material size<br />
for easy insertion into a preformed<br />
joint of the same opening width.<br />
Sealing between the foam and<br />
substrate is achieved through a<br />
<strong>com</strong>bination of the pressure-sensitive<br />
adhesive impregnation and the<br />
back pressure of the expanding<br />
foam.<br />
IST SEALANT TAPES<br />
<strong>EMSEAL</strong> JOINT SYSTEMS, LTD.<br />
23 Bridle Lane, Suite 3<br />
Westborough, MA 01581-2603<br />
Toll Free: 800-837-3331 PH: 860-677-7386 FX: 860-677-1408<br />
Uses, Applications<br />
As a water, vapor, air, sound and<br />
dust seal between metal surfaces,<br />
as well as between concrete and<br />
other substrates.<br />
For applications requiring high temperature<br />
stability.<br />
Ideal as a gasket tightly squeezed<br />
between joint faces that are<br />
mechanically fastened together<br />
such as lap seams.<br />
Its resilience makes it also suitable<br />
for use in a partly expanded<br />
condition for filling preformed<br />
openings between <strong>com</strong>ponents and<br />
where joint opening size varies due<br />
to seasonal temperature changes.<br />
In applications where damping vibration<br />
and noise is as important as<br />
weather sealing.<br />
As a secondary seal behind caulk.<br />
IST TECH DATA<br />
JANUARY 2001, PAGE 1 OF 2<br />
TECHD<br />
ATA<br />
<strong>EMSEAL</strong> CORPORATION<br />
84 Brydon Drive<br />
Rexdale, ON, Canada M9W 4N6<br />
Toll Free: 866-436-7325 PH: 416-740-2090 FX: 416-740-0233<br />
Advantages<br />
Does not dry out.<br />
Durable, resilient, therefore suitable<br />
for moving joints.<br />
Tolerant of joint face irregularities.<br />
Ideal as a secondary seal to wet<br />
sealants (caulk).<br />
Compatible with and adheres to<br />
most wet sealants.<br />
Does not bleed.<br />
Back pressure of foam maintains<br />
seal, minimizes tension on substrate,<br />
and reduces possibility of failure<br />
due to weak or improperly prepared<br />
substrates.<br />
Exposed face remains virtually flat<br />
regardless of variation and changes<br />
in joint width and <strong>com</strong>pression.<br />
User friendly—no masking, mixing,<br />
priming, tooling, curing or cleanup<br />
required.<br />
Polyester scrim embedded in selfadhesive<br />
resists stretching of<br />
material during installation.<br />
Good thermal and sound insulating<br />
properties.<br />
Difficult to vandalize.<br />
TABLE 1: Typical Physical Properties of IST<br />
BASE MATERIAL<br />
Impregnation<br />
COLOR<br />
Tensile strength<br />
TEMPERATURE RANGE<br />
HIGH - PERMANENT<br />
LOW - PERMANENT<br />
UV resistance<br />
MILDEW RESISTANCE<br />
Resistance to aging<br />
BLEEDING<br />
Compression set<br />
THERMAL CONDUCTIVITY<br />
Property Value Test Method<br />
OPEN CELL, HIGH DENSITY, POLYURETHANE<br />
FOAM<br />
Water-based, Stabilized Acrylics<br />
CHARCOAL GREY<br />
21 psi min (145 kPa)<br />
249°F (120°C)<br />
-40°F (-40°C)<br />
Excellent<br />
EXCELLENT<br />
Excellent<br />
NONE<br />
5% max<br />
0.34 BTU. IN/HR. FT 2, 0 F (0.05 W/M. 0 C)<br />
<strong>EMSEAL</strong> JOINT SYSTEMS LTD, 23 Bridle Lane, Ste.3, Westborough, MA 01581-2603 PHONE 800-837-3331 FAX 860-677-1408<br />
<strong>EMSEAL</strong> CORPORATION, 84 Brydon Drive, Rexdale, ON, Canada M9W 4N6 PHONE 416-740-2090 FAX 416-740-0233<br />
N/A<br />
N/A<br />
N/A<br />
ASTM D3574<br />
ASTM C711<br />
ASTM C711<br />
ASTM D3574<br />
ASTM C518<br />
Copyright © 2001, by <strong>EMSEAL</strong> USA Inc, All Rights Reserved
http://www.emseal.<strong>com</strong><br />
Minimizes tension on substrate<br />
and reduces possibility of failure<br />
due to weak or improperly prepared<br />
substrates.<br />
Vermin resistant.<br />
Limitations<br />
IST will not adhere to joints that are<br />
dirty or dust-covered or to surfaces<br />
coated with oils or release agents.<br />
IST service temperature range is<br />
-40°F to 249°F (-40°C to 120°C).<br />
Joint Seal<br />
Characteristics<br />
Table 1 gives the physical properties<br />
of IST.<br />
Table 2 illustrates standard sizing<br />
of IST.<br />
Joint Design<br />
Substrate faces must be parallel<br />
and have sufficient clear depth to<br />
fully support IST.<br />
Substrate must be capable of resisting,<br />
without deflection, approximately<br />
1.5 to 2.5 lb/in 2 (10 to 17<br />
kPa) back pressure from the IST.<br />
Installation<br />
Surface Preparation: Joint surfaces<br />
must be free from gross irregularities,<br />
loose particles, foreign matter<br />
such as dirt, dust, ice, snow, water,<br />
etc., and coatings such as grease,<br />
oil, release agents, lacquers, etc.,<br />
that may be detrimental to the<br />
adhesion of the sealant.<br />
IST should be stored indoors at room<br />
temperature. Recovery is quicker<br />
when warm and slower when cold.<br />
Remove IST from protective packaging.<br />
Expose self-adhesive side by<br />
removing release liner.<br />
Join consecutive lengths of material<br />
with a 45° miter.<br />
Warranty<br />
Standard or project-specific warranties<br />
are available from <strong>EMSEAL</strong> on request.<br />
IST TECH DATA<br />
FEBRUARY 1998, PAGE 2 OF 2<br />
TABLE 2: Standard Sizes<br />
The following are the most popular sizes, but material of<br />
virtually any size can be provided to suit your specific requirements.<br />
Nominal Expanded Box Rolls Roll Product<br />
Size Size Quantity Per Box Length Code<br />
1/16x3/8" 1/4x3/8" 1968' 60 32.8' 1010<br />
(1.6x10mm) (10x10mm) (300m)<br />
1/16x1" 1/4x1" 511.68' 26 32.8' 1025<br />
(1.6x25mm) (10x25mm) (156m)<br />
1/10x1/2" 3/8x1/2" 1640' 50 32.8' 1012<br />
(2.5x12mm) (10x12mm) (500m)<br />
1/10x3/4" 3/8x3/4" 1049.6' 32 32.8' 1020<br />
(2.5x20mm) (10x20mm) (320m)<br />
1/8x1/2" 1/2x1/2" 820' 50 26.24' 1512<br />
(3.2x12mm) (12x12mm) (250)<br />
1/8x3/4" 1/2x20" 524.8' 32 26.24' 1520<br />
(3.2x20mm) (12x20mm) (160m)<br />
1/4x1/2" 1/2x1/2" 984' 50 19.68' 2512<br />
(6x12mm) (24x12mm) (300m)<br />
1/4x3/4" 1x3/4" 629.76' 32 19.68' 2520<br />
(6x20mm) (24x20mm) (192mm)<br />
1/4x1-1/2" 1x1-1/2" 314.88' 20 19.68' 2537<br />
(6x37mm) (24x37mm) (96m)<br />
For technical service, samples,<br />
and pricing contact:<br />
<strong>EMSEAL</strong> JOINT SYSTEMS LTD.<br />
23 Bridle Lane, Suite 3<br />
Westborough, MA 01581-2603<br />
PH: 800-837-3331 FX: 860-677-1408<br />
Availability and Price<br />
<strong>EMSEAL</strong> products are available internationally.<br />
The product range is<br />
continually being developed, and<br />
<strong>EMSEAL</strong> reserves the right to modify<br />
or withdraw any product without prior<br />
notice.<br />
Printed with soy-based inks on acid-free, recycled, chlorine-free paper.<br />
<strong>EMSEAL</strong> USA INC. 23 Bridle Lane, Ste.3, Westborough, MA 01581-2603 PHONE 800-837-3331 FAX 860-677-1408<br />
<strong>EMSEAL</strong> CORPORATION, 84 Brydon Drive, Rexdale, ON, Canada M9W 4N6 PHONE 416-740-2090 FAX 416-740-0233<br />
Copyright © 1998, by <strong>EMSEAL</strong> USA Inc, All Rights Reserved
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