DYNAFOAM® 7440FC - Saint-Gobain Performance Plastics Foams

DYNAFOAM® 7440FC
DYNAFOAM® 7440FC is a mono-component foam-in-place gasketing material,
physically foamed with nitrogen and reacting with the moisture to create, after
curing, a thermoset elastomeric gasket.
DYNAFOAM® 7440FC is intended for use as a water, dust, air and noise seal
because of its semi closed-cell structure. DYNAFOAM® 7440FC attains an efficient
water seal at only 30% compression. Its softness and conformability allows
DYNAFOAM® 7440FC to recover large tolerances during assembly and it avoids
distortion of thin-wall plastics. Due to its low compression set, it is ideal for semipermanent
(serviceable) seals.
Other key advantages of using DYNAFOAM® 7440FC are its superior physical
properties: semi closed-cell structure preventing water absorption, excellent
adhesion properties to a wide range of materials, performance under extreme
environmental conditions and resistance to sustained high temperatures.
Its thixotropic behaviour allows 3-dimensional and upside-down applications.
DYNAFOAM® 7440FC holds its shape right out of the nozzle without sagging, even
when applied on an incline or upside-down. DYNAFOAM® 7440FCmaintains a
0.65:1 height-to-width ratio, is usable for high diameter seamless gaskets, and can
be extruded on three axes. The desired gasket height (up to 0.24") can be achieved
with or without a groove.
DYNAFOAM® 7440FC
Sealing For Battery Packs
Robotically Applied
Foam-In-Place Gasketing
Material
Features & Benefits
• Very efficient air & water seal with
only 30% compression
• Excellent (humidity) ageing
resistance
• Low water absorption
• Soft, easily compressible foam
compensating very high tolerances
• Wide temperature range
• Thixotropic behaviour allowing
3-dimensional and upside-down
applications, without groove
requirement
• Non toxic material
Typical Applications
• Battery pack cover

DYNAFOAM® 7440FC
DYNAFOAM® 7440FC is applied directly onto the part. By changing the angle of the nozzle, the flow rate and/or the robot speed,
the gasket can be adapted to the desired height.
Designed for automation, DYNAFOAM® 7440FC enhances productivity in large volume applications and results in significant
savings in labour and materials by eliminating the die-cut scrap and by reducing the material inventory. Parts can be handled
quickly and easily, eliminating production bottlenecks. Unlike hand-applied gaskets, it offers a repeatable process from cycle to
cycle.
DYNAFOAM® 7440FC is a non toxic material which does not require special ventilation to meet industry safety standards. It
is free of cadmium, lead, chrome (VI), mercury and other substances subject to declaration in the International Material Data
System list.
Properties Test Method Value
Density (foamed & cured), kg/m3 ASTM D1056 200 - 240
Standard color - Grey*
Hardness, Shore OO ASTM D2240 35 -55
Compression set, % ASTM D1667 < 15
Max. recommended compression, % - 70
Tensile strength, N/cm² DIN 53571 > 20
Elongation @ break, % DIN 53571 > 100
Water absorption, % ASTM D1056 < 10
Tempertaure range, °F -40 to +257
* Color may slightly vary from lot to lot, without affecting product performances.
Parameter values are not guaranteed and will differ from lot to lot. For specification writing, contact the Application Engineering Department.
Packaging : 20 lit pails - net weigth 16 kg
200 lit drums - net weight 180 kg
Shelf life : 6 months after production date
Storage & transport : 86°Fmaximum - no exposure to sunshine
Saint-Gobain Performance Plastics
Hoosick Falls, New York 12090-0320
Customer Service: (800) 962-2666
Tel: (518) 686-7301
Fax: (800) 562-8479, (518) 686-4840
DYNAFOAM is a registered trademark.
Limited Warranty: For a period of 6 months from the date of first sale, Saint-Gobain Performanc Plastics Corporation warrants this product(s) to be free from defects in manufacturing. Our only obligation
will be to provide replacement product for any portion proving defective, or at our option, to refund the purchase price thereof. User assumes all other risks, if any including the risk of injury, loss or damage,
whether direct or subsequential, arising out of the use, misuse, or inability to use this product(s). SAINT-GOBAIN PERFORMANCE PLASTICS DISCLAIMS ANY AND ALL OTHER WARRANTIES, EXPRESSED OR
IMPLIED, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
NOTE: Saint-Gobain Performance Plastics Corporation does not assume any responsability or liability for any advice furnised by it, or for the performance or results of any installation or use of the
product(s) or of any final product into which the product(s) may be incorporated by the purchaser and/or user. The purchaser and/or user should perform its own tests to determine the suitability and
fitness of the product(s) for the particular purpose desired in any given situation.
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