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Epoxies and Thermally
Conductive Pastes
OMEGABOND® epoxy and OMEGATHERM
®
thermal conducting pastes are high temperature
and high thermally conductive epoxies and silicone
products. They are specially formulated for
permanent and temporary bonding of
thermocouples, thin film RTDs, thermistors and
other temperature sensors. The pastes are also
formulated to most surfaces–metals, ceramics,
glass, plastics, and paper products.
OMEGABOND® and OMEGATHERM® products are
compounded and packaged for convenient, easy
mixing and application. Each formulation exhibits
important characteristics necessary for accurate,
fast, reliable temperature measurement. These are:
good adhesion and strength, high temperature
rating, high thermal conduction, high electric
insulation, thixotropic consistency, fast cure, and
easy application.
To assist in your selection, a summary of each
product’s properties are shown in the
accompanying table.
“Twin pak” packaging is supplied to ensure the user
with accurate proportioning of resin and catalyst, as
well as to provide a clean, fast means of mixing.
The “Twin Pak” is a flexible, transparent plastic
pouch, separated into
two isolated compartments by means of a
removable external divider. In one compartment is
the resin, in the other compartment is the premeasured catalyst. To use, remove the divider, mix
the two components by kneading the pouch, then
snip-off a corner to dispense. Each “Twin Pak”
comes with an instruction sheet, enclosed in a
clear, heat-sealed plastic envelope.
Typical Properties
Model No. OB-100 OB-101 OB-200 OT-201
Material Fast set Epoxy Epoxy Silicone
Max. Continuous
Temperature
Cure
Working Life 8 min 30 min 24 hr
Adheres to
Most* PA, W PA, W PA, W most
Thermal
conductivity (k)
(BTU)
(in)/(hr)
(ft2) (°F)
Electrical
Insulation
Volume
Resistivity
ohm–cm
Tensile
Shear 2000 2200 2700 —
PSI MIN
Flexure
Strength — 12,000 17,000 —
PSI MIN
Coefficient of
Thermal 51 x 10
Expansion
in/in/°F
OB-102
epoxy adhesive adhesive grease
adhesive
130°C 105°C 260°C 200°C
(265°F) (221°F) (500°F) (392°F)
8 to 12 min
set room temp temp required
temp
at room at room at room —
temp temp temp
M, C, PL, M, C, PL, M, C, PL, Wets
Low High Very high
High Very high Very high Very high
10
Room Elevated Not
7.2 9.6
12
1015 1015 10
–6
20 x 10–6 21 x 10
Epoxy
adhesive
130°C
(266°F)
Room temp or Heat
16 to 24 hrs @ 25°C/77°F
4 to 6 hrs @ 45°C/113°F
1 to 2 hrs @ 65°C/149°F
45 min @ 25°C/77°F
M, C, and some PL with
proper surface prep
(cleaning / abrasion)
Very High 9.99
Very High 1015
Low stress bonding
Low stress bonding
—
surfaces
Extremely
high
16
14
–6
—
M = Metal PA = Paper Products
*
C = Ceramic W = Wood
PL = Plastic
The above information, while determined by tests and evaluation,
is offered only as a general guide. Actual suitability for a particular
purpose must be determined by material user. This information is not
to be taken as a warranty for which we assume legal responsibility.
OB-200-2
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OMEGABOND® 100 (OB-100)
®
OMEGABOND
room temperature, two-part epoxy. Recommended for
easy temporary and permanent bonding of beaded
wire and “cement-on” thermocouples. Adheres to metals,
ceramics, epoxy laminates, glass, wood, concrete and
many other materials—for temperature measurements
up to 129°C (265°F). It is not recommended for those
endeavoring to achieve the ultimate in precision and speed
of response, since this unfilled system has a relatively low
thermal conductivity.
Temporary installation of beaded wire thermocouples
can be achieved by using a very small amount of
OMEGABOND
and packing OMEGATHERM
surface to improve heat transfer. This clear syrup
consistency—100% solid adhesive — contains no
solvents and has good strength and electrical insulation
characteristics. Note: The working time after mixing the
2-part system at room temperature is only 6 to 8 minutes.
OMEGABOND 100 is available in “Twin Pak” packs and 1and 2-pound kits.
100—a fast (8 to 12 minute setting time),
®
100 to tack the bead to the surface
®
201 around the exposed
OMEGATHERM® 201 (OT-201)
OMEGATHERM® 201—is a very high thermally conductive
filled silicone paste, ideally suited for many temperature
measurement applications. This thick, grey, smooth paste
wets most surfaces and will not harden on long exposure
to elevated temperatures. It is rated for continuous use
between -40 and 200°C (-40 and 392°F).
®
OMEGATHERM
conducting heat and expanding the heat-path area from
a surface to a temperature measurement sensor, thus
increasing the speed of response and improving accuracy.
Some applications are:
a) Surface Measurement Probes — dab a small amount
on the surface and push the sensor into this area.
b) Temporary bonding and encapsulating of
temperature sensors — simply dab OMEGATHERM
201 onto the surface or in the cavity, plant the sensor
in the paste, and tape to hold in place.
This highly versatile paste is supplied in
jars, as well as in 1- and 2-pound containers.
201 provides an excellent means of
1
⁄2- and 2-ounce
®
F
OMEGABOND®
101 and 102
(OB-101 and OB-102)
®
OMEGABOND
101 (White epoxy) and Omegabond 102
(black epoxy) are very versatile room-temperature curing,
highly thermally conductive, 2-part epoxy adhesives
designed specifically to bond permanently "cement-on" and
beaded wire thermocouples and other sensors to a wide
variety of material. At room temperature, the epoxy will be
fully cured within 24 hours, but curing time can be
accelerated by applying moderate heat.
OMEGABOND® 200 (OB-200)
®
OMEGABOND
thermally conductive, 2-part epoxy system which will bond
sensors to most materials, including metals, glass, ceramics
and most plastics. It is recommended for bonding of
“cement-on” and beaded wire thermocouples for accuracy
and fast temperature measurement to 260°C (500°F). This
epoxy system cures at elevated temperatures. Curing time is
8 hours at 120°C (250°F), 2 hours at 205°C (400°F).
It has excellent strength and electrical insulating
characteristics. Its thixotropic paste consistency virtually
ensures freedom from sag during curing when applied to
vertical surfaces.
OMEGABOND® 200 is mixed 100 parts resin to
10 parts catalyst by weight, and is supplied in
“Twin Paks” to ensure proper formulating.
1- and 2-pound kits
are also available.
OB-100-1
200—is a black, high temperature, high
To Order
Model No. Description
OB-100-1/4
OB-100-1
OB-100-16
OB-101-1/2
OB-101-2
OB-101-16
OB-102-16
OB-102-1/
OB-102-2
OB-200-2
OB-200-16
OT-201-1/2
OT-201-2
OT-201-16
OMEGABOND 100 epoxy, one
OMEGABOND 100 epoxy, one 1 oz twin pak
OMEGABOND 100 epoxy, 8 oz resin, 8 oz catalyst kit
OMEGABOND 101 epoxy, one
OMEGABOND 101 epoxy, one 2 oz twin pak
OMEGABOND 101 epoxy, 8 oz resin, 8 oz catalyst kit
OMEGABOND 102 epoxy, 16 oz resin, 1 oz catalyst
(mix ratio 100 parts material to 3.5 parts catalyst by weight)
OMEGABOND 102 epoxy,
2
(mix ratio 100 parts material to 3.5 parts catalyst by weight)
OMEGABOND 102 epoxy,2 oz resin,
(mix ratio 100 parts material to 3.5 parts catalyst by weight)
OMEGABOND 200 epoxy, one 2 oz twin pak
OMEGABOND 200 epoxy, 1 lb resin, 2 oz catalyst kit
Thermally conductive paste,
Thermally conductive paste, 2 oz jar
Thermally conductive paste, 16 oz can
Multi-Purpose
OMEGABOND® and OMEGATHERM® Kit
This versatile kit is recommended as a convenient way
to determine the best means to bond sensors before
ordering in quantity. Each kit contains:
1
4 —
⁄4 oz “Twin Paks” of OMEGABOND® 100
1
2 —
⁄2 oz “Twin Paks” of OMEGABOND® 101
1 — 2 oz “Twin Pak” of OMEGABOND
1
2 —
⁄2 oz Jars of OMEGATHERM
When ordering, specify “MPK-1”
1
⁄ 4 oz twin pak
1
⁄ 2 oz twin pak
1
⁄ 2 oz resin,1⁄
1
⁄ 2 oz jar
®
200
®
201
2 oz catalyst
1
⁄
2 oz catalyst
OB-101-2
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