Epoxies and Thermally Conductive Pastes OMEGABONDTM epoxy and OMEGATHERMTM 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. OMEGABONDTM and OMEGATHERMTM 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 pre-measured 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. Model No. OB-100 OB-101 OB-200 OT-201 Material Fast set Epoxy Epoxy Silicone epoxy adhesive adhesive grease adhesive Max Continuous Temperature 130°C 105°C 260°C 200°C Cure 8 to 12 min Room Elevated Not set room temp temp required temp Adheres to M, C, PL, M, C, PL, M, C, PL, Wets Most* PA, W PA, W PA, W most surfaces Thermal conductivity (k) Low High Very high Extremely (BTU) 7.2 9.6 high (in)/(hr) 16 (ft2) (°F) Electrical Insulation High Very high Very high Very high Volume 1012 1015 1015 1014 Resistivity ohm–cm Tensile Shear 2000 2200 2700 — PSI MIN Flexure Strength — 12,000 17,000 — PSI MIN Coefficient of Thermal 51 x 10–6 20 x 10–6 21 x 10–6 — Expansion in/ in/ °F Typical Properties 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. *M = Metal PA = Paper Products C = Ceramic W = Wood PL = Plastic 150

OMEGATHERMTM 201 OMEGATHERMTM 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. OMEGATHERMTM 201 provides an excellent means of 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...

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