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Product Information
Electrical
System SYLGARD® HVIC+
Maintenance
One-part silicone coating designed for high-voltage insulators,
instrument transformers and other high-voltage devices where
surface contamination causes insulation problems
FEATURES
" Imparts arc resistance and APPLICATIONS
hydrophobicity SYLGARD HVIC+ can be used in applications including:
" Exhibits a unique ability to recover water " On glass, porcelain and composite insulators where improved surface dielectric
repellency after contaminants are properties are needed.
deposited on its surface " On line and station insulators, as well as bushings, instrument transformers and
" Contains a special arc resistance additive related devices.
that minimizes surface damage from " Increasing the surface resistance of bucket truck booms.
electrical activity during extreme weather " Other applications requiring arc resistance such as barrier boards used in switch
events
gear and in large motors.
BENEFITS TYPICAL PROPERTIES
" Flashover protection Specification writers: These values are not intended for use in preparing specifications.
" Long term hydrophobicity Please contact your local Dow Corning sales representative prior to writing specifications on
this product.
COMPOSITION
CTM* ASTM* Property Unit Value
" Silicone RTV dispersion coating
" Pourable liquid As supplied
Color White or gray
Percent solids % 75
0001A D1298 Specific gravity, wet 1.219
0095 Tack-free time minutes 30
As cured electrical properties
0112 D150 Dielectric constant at 60Hz 4.26
0112 D150 Dissipation factor at 60Hz 0.024
0114 D149 Dielectric strength at 50mils volts/mil 556
0171 D495 Dry arc resistance, track seconds 183
* CTM: Corporate Test Method, copies of CTMs are available on request.
*ASTM: American Society for Testing and Materials.

2. DESCRIPTION HOW TO USE HANDLING PRECAUTIONS
SYLGARD HVIC+ is a one-part Before use, SYLGARD HVIC+ should Caution: SYLGARD HVIC+ is
silicone RTV dispersion designed to be thoroughly agitated on a paint supplied in a combustible solvent.
improve the performance of ceramic shaker or can roller to ensure When using combustible solvents,
and non-silicone high voltage uniformity. keep away from heat, sparks and open
insulators and similar apparatus. When flames. Use only with adequate
properly applied and cured, a smooth SYLGARD HVIC+ should be applied ventilation. Avoid prolonged breathing
elastomeric coating is formed over the in several coats over a clean, dry of vapor and prolonged or repeated
surface of the insulator. The silicone surface. Any surface previously coated skin contact. Always follow solvent
surface is highly hydrophobic when with a silicone grease should be container label instructions.
new and exhibits a unique ability to cleaned thoroughly before applying the
recover water repellency after coating. Product safety information required
contaminants are deposited on its for safe use is not included. Before
surface. Interaction between the Surfaces other than glass or porcelain handling, read product and safety data
silicone coating and the contamination may require use of a primer to ensure sheets and container labels for safe use,
occurs, which results in the adhesion. Consult Dow Corning physical and health hazard information.
maintenance of high surface resistance Technical Service and Development The material safety data sheet is
and reduced leakage currents, for primer recommendations. available on the Dow Corning website
interrupting the process that leads to at www.dowcorning.com. You can also
contamination flashovers. SYLGARD HVIC+ can be reapplied to obtain a copy from your local
previously coated surfaces after Dow Corning sales representative or
SYLGARD HVIC+ also contains a pressure water washing. Distributor or by calling your local
special arc resistance additive that Dow Corning Global Connection.
minimizes surface damage from The product is normally spray applied,
electrical activity during extreme but can be applied by brushing or USABLE LIFE AND
weather events such as salt storms. The dipping. An average dry thickness of STORAGE
coating has been used to impart arc 20mils (0.020 inch) is recommended When stored at or below 32ºC (90ºF) in
resistance and hydrophobicity to other on insulators. Two to three sprayed the original unopened containers, this
devices, such as barrier boards used in coats are needed to attain this average. product has a usable life of 12 months
switch gear and in large motors. Depending on temperature and from the date of production.
humidity, full cure takes 2 to 6 hours.
This product is designed to reduce Additional coats can be applied after When using SYLGARD HVIC+ from
maintenance on insulators and 20 to 30 minutes. a previously opened container, any
associated equipment by reducing or, cured skin must be removed from the
in many cases, eliminating the need for For dilution, a high flash point surface.
repetitive water washing, or 38ºC (100ºF) naphtha spirits solvent
eliminating the need for repetitive is recommended. Acceptable solvents PACKAGING
greasing. include Kwik Dri Naphtha Spirits 66 This product is available in 10, 45 and
from Ashland Chemical and Solvent 450 lb (4.54, 20.4 and 204.1kg)
360 from Shell Oil. Equipment containers.
recommendations can be obtained from
Dow Corning.
SYLGARD HVIC+
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Ref. no. 45-1121-01

3. LIMITATIONS LIMITED WARRANTY
SYLGARD HVIC+ is a non-chalking, INFORMATION - PLEASE
weather-resistant material; however, READ CAREFULLY
electrical activity can cause erosion of The information contained herein is
the coating. To provide maximum offered in good faith and is believed
protection, a dry thickness of 20 mils to be accurate. However, because
(0.020 inch) ±3 mils is recommended. conditions and methods of use of our
products are beyond our control, this
This product is neither tested nor information should not be used in
represented as suitable for medical substitution for customers' tests to
or pharmaceutical uses. ensure that Dow Corning's products are
safe, effective, and fully satisfactory
SHIPPING LIMITATIONS for the intended end use. Suggestions
DOT Classification: Combustible. of use shall not be taken as
inducements to infringe any patent.
HEALTH AND
ENVIRONMENTAL Dow Corning's sole warranty is that the
INFORMATION product will meet the Dow Corning
To support Customers in their product sales specifications in effect at the time
safety needs, Dow Corning has an of shipment.
extensive Product Stewardship
organization and a team of Product Your exclusive remedy for breach of
Safety and Regulatory Compliance such warranty is limited to refund of
(PSRC) specialists available in each purchase price or replacement of any
area. product shown to be other than as
warranted.
For further information, please see our
website, www.dowcorning.com or DOW CORNING SPECIFICALLY
consult your local Dow Corning DISCLAIMS ANY OTHER
representative. EXPRESS OR IMPLIED
WARRANTY OF FITNESS FOR
A PARTICULAR PURPOSE OR
MERCHANTABILITY.
DOW CORNING DISCLAIMS
LIABILITY FOR ANY
INCIDENTAL OR
CONSEQUENTIAL DAMAGES.
We help you invent the future.
www.dowcorning.com
SYLGARD HVIC+
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Ref. no. 45-1121-01

4. SYLGARD HVIC+ We help you invent the future. is a trademark of Dow Corning Corporation.
4 28/08/2003 Dow Corning and SYLGARD are registered trademarks of Dow Corning Corporation.
Ref. no. 45-1121-01 DC 4420 ©2003 Dow Corning Corporation. All rights reserved.