ARLON®
Water Resistant
Flex Heater Substrate
Flexible heaters serve applications in a vast range
of industries. The traditional design of the silicone
ex-heater contains berglass fabric between
layers of silicone. While this construction is eective
in most applications, it proves insucient in high
moisture or underwater environments. The
berglass fabric is hydrophilic and wicks water,
causing moisture to seep into the heater
through exposed berglass bers. This could result
in a signicant drop o in electrical resistance and
poor dielectric permanence.
Rogers now oers a waterproof substrate for
exible heaters. The new waterproof design
replaces the berglass fabric with Rogers’ DeWAL®
polytetrauoroethylene (PTFE) lm. PTFE is
hydrophobic and does not wick water. The
design remains robust and durable, but has
the added bonus of functioning eectively in
wet environments.
Key Features:
• PTFE substrate
• Uncured silicone on one side
• Cured silicone on other side
• Two available thicknesses: 20 mil and 30 mil
• Applicable to both etched-foil and wire-wound
ex heaters
• Thermally stable
• UL Approved
Silicone with Fiberglass (H
2
0 wicking)
Silicone with PTFE (No H
2
0 wicking)
ARLON®
Water Resistant
Flex Heater Substrate
Contact Information
For more information on Rogers’ ex heater
substrate capabilities please contact us:
302.834.2100 (phone)
302.834.4021 (fax)
www.rogerscorp.com/arlon
solutions@rogerscorp.com
The information contained in this Sell Sheet is intended to assist you in designing with Rogers’ Elastomeric Material
Solutions. It is not intended to and does not create any warranties, express or implied, including any warranty of
merchantability or fitness for a particular purpose or that the results shown in this Sell Sheet will be achieved by a user for
a particular purpose. The user should determine the suitability of Rogers’ ARLON products for each application. The Rogers
logo, ARLON, the ARLON logo, and DeWAL are trademarks of Rogers Corporation or one of its subsidiaries.
© 2019 Rogers Corporation. All rights reserved. 0319-PDF • Publication #202-204
Typical Physical Properties
Property Unit 34C36R020 34C36R030
Total Thickness
mm
(mil)
0.508
(20)
0.762
(30)
Substrate Thickness
mm
(mil)
0.127
(5.0)
Cured Side Thickness
mm
(mil)
0.165
(6.5)
Uncured Side Thickness
mm
(mil)
0.216
(8.5)
0.470
(18.5)
Silicone Tensile Strength
kPa
(psi)
7874
(1142)
Silicone Elongation % 186
Dielectric Strength
kV/mm
(V/mil)
52.7
(1338)
36.6
(929)
Silicone Durometer Shore A Points 67
Volume Resistivity Ω-cm 6.2x10
15
1.3x10
15
Bond Strength
(S2 to S2)
N/m
(lbf/in)
790
(4.5)
950
(5.4)
Water Absorption % 0.17 0.17
Temperature Range
°C
(°F)
-57 to 220
(-70 to 428)
Color - Red
Processing Recommendations
Recommended Cure Cycle 15 minutes @ 121°C (250°F) and 345 kPa (50 psi)
Recommended Post-Cure Cycle 2 hours @ 204°C (400°F)