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Silicone Rubber Insulated Flexible Heater: Description

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Components

SL

FLEXIBLE
Silicone Rubber Insulated
Flexible Heater

• SL-N General Purpose Heaters

• SL-B Enclosure Heaters

• Flexible in Design and


Application

• UL and CSA Recognized


Components

• Square, Rectangular, Round and Description


Custom Shapes
Chromalox SL Silicone Rubber Insulated Heat- increasing the number of cycles the heater
• Max. size of a single piece: 36" ers provide the greatest flexibility in meeting is going to experience. The same heat-up
Wide x 120" Long your application requirements. Ruggedness, requirements can be met by decreasing watt-
• Can join sections into longer dimensional stability, flexibility, and superior age and increasing actual operation time. In
length weather survivability are all characteristics addition, by decreasing on-off cycles, you will
of reinforced silicone rubber heaters. The be lengthening the life of your element.
• Up to 600 Volt thin profile and direct contact of the heaters
provide fast, efficient heat transfer to your part Ordering Information
• Silicone Rubber Material and require less power than traditional heating
methods. Please refer to the matrix provided on the Flex-
Temp. Range -80°F to 390°F ible Heater Ordering Guidelines page which
Features follows.
• Myriad of Mounting Methods
• Standard Heaters are available or made to Options
• Standard Thickness Ranges order to exact electrical and contour specifi-
from 0.030" to 0.060" Except at cations. • For Mounting Methods, Temperature Control
Lead Pad Which is 0.15" Thick and Termination Options. Consult the Flex-
Depending on Design. • Silicone Rubber can operate from -80°F to ible Heaters section.
392°F
• Grounding of the heating element can be
• Standard Resistance Tolerance • Silicone Rubber Material is UL Recognized easily achieved internally to the element or
is -10% +5%. for watt densities of: externally to your equipment. A wire-mesh
• 5 W/In2 in open air screen can be vulcanized into the heater to
provide a ground plane. Mounting plates, foil
• 10 W/In2 attached with factory backing or flying ground wires are several
supplied PSA options available for external grounding.
• 15 W/In2 vulcanized to metal part.
• Three methods of integral insulation can
• Up to 40 W/In2 possible with proper tem- be provided. The most durable and one of
perature control. greatest thermal insulation is to vulcanize
a layer of silicone foam to the back of the
• Fast heat-up and cool down. heater. Silicone foam is available in thick-
• Wide choice of electrical termination: Solder- nesses of 1/8, 1/4 or 1/2". Finally, Fiberglas®
less connectors and terminals, stranded lead insulation can be encased in silicone rubber
wires, cords and plugs. and serve as the outer two layers of the
heating element. This method is not recom-
• Distributed wattage requirements can be met mended for outdoor use since construction
by design. methods allow for moisture to permeate the
insulation.
Note — With flexible heaters, less wattage
is generally needed due to the direct contact
of the elements to the part. In most cases of
high watt density, you are adding power but

A-137

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