Wire Wound Flexible & Etch Foil Heaters0 pages

Technical Datasheet
Silicone Rubber Insulated Heating Elements
l Custom Design
l Etch Foil and Wire Wound Technology

Applications:

l UL and VDE Approval available

Silicone rubber is ideally suited for the production of heater mats with
it’s low thermal mass and superb electrical insulation properties, it
allows high power densities with fast response to temperature control.
With silicones wide temperature range tolerance of –60°C to 230°C,
being thin and lightweight it has a distinct advantage over other forms
of heating elements. Where direct precise and intimate heating is
required silicone heaters are the ideal solution.

l Low Smoke and Low Toxicity options

Wire Wound:

l Precise Even Heating
l Flexible and Lightweight
l Moisture and Chemical Resistant
l Wide Temperature Range -60 to 230˚C

available
l Full Design and Manufacturing Service

Physical Characteristics:
l Weather & Ageing resistance – Very Good
l Ozone resistance – Very good
l Gas Permeability – Adequate
l Steam Resistance – Good:

up to 130˚C or 2.5 bar
l Fungus & Bacteria Resistance- Very Good
l Combustibility-Various Flame retarding

materials available
l Good Resistance to – Acetone, Alcohol,

Formic Acid, Brake Fluid, Chlordihenyl,
Acetic Acid, Greases, Polar Solvents,
Hydrchloric Acid 10%, Sulphuric Acid
10%, Waxes, Plasticisers

Using evenly spaced resistance wires laminated between sheets of
silicone, wire wound mats are ideal for prototyping or problem solving
applications. Manufactured to customer specifications they can be
made in a limitless range of shapes and sizes. High flexibility can be
obtained using tough, robust materials which are finding ever
increasing applications in industries.

Etch Foil:
Computer designed chemically etched foil tracks are laminated
between thin sheets of silicone to give precise even heating. Suitable
for both low and high volume production Etched foil heaters have
rapid heat up properties with precise temperature control. Available in
a limitless range to customer specification etch foil heaters provide
heating solutions in a multiple of industries.
Type:

H/SR=Holroyd Silicone Rubber
H/SR-A=Holroyd Silicone Rubber Adhesive

Dimensions:

Width 940mm maximum
Length 3000mm maximum
Nominal Thickness H/SR
0.7mm-3.0mm
H/SR-A 0.8mm-3.0mm

Construction:

Two ply woven glass textile reinforced silicone rubber

Temperature:

H/SR

l Thermal Conductivity-Watt/Meter/K 0.22
l Specific Heat- Joule/Kg/K 1623

Holroyd Components Ltd.
Shire Hill Industrial Estate,
Saffron Walden, Essex
CB11 3AQ United Kingdom
Tel: +44 (0) 1799 523177
Fax: +44 (0) 1799 513714
sales@holroydcomponents.com
www.holroydcomponents.com

UL and VDE approved manufacturing facilities

-60˚C to +200˚C maximum continuous
230˚C short term
H/SR-A -20˚C to +180˚C maximum continuous
230˚C short term

Installation & Fixing:
Our self adhesive option is a quick and simple fixing method which
provides superb bonding results to many surfaces including low
energy materials. Where removal of the heater is necessary alternative
fixings are available such as hooks and straps as well as Velcro
and magnetic backed options. Most mechanical fixing methods
can be accommodated.

www.holroydcomponents.com