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High Temperature, High Thermally Conductive Paste

OMEGATHERM™ High Temperature and High Thermally Conductive Paste


Item# OT-201-16

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-9 $214.09
10-24 $203.39
25-49 $199.10
50-99 $190.54
100-199 $186.26
200+ $181.98

In stock

Lead Time (If not in stock): 3 weeks
OMEGATHERM™ High Temperature and High Thermally Conductive Paste OT-201-16 OT-201-16
  • High Temperature Thermal Paste, Continuous Temperature to 200°C (392°F)
  • Extremely High Thermal Conductivity
  • Adheres to Most Surfaces

OT-201-16 Model Options

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Max Temperature
Mix Ratio By Weight
Tensile Shear
Additional Option

OMEGATHERM™ thermal conducting paste is a high temperature and high thermally conductive paste product. They are specially formulated for permanent and temporary bonding of thermocouples, thin film RTDs, thermistors and other temperature sensors, to most surfaces–metals, ceramics, glass, plastics, paper products.

OMEGATHERM™ products is 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.

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™ 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 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 1/2- and 2-ounce jars, as well as in one- and two-pound containers.

Model No. OT-201
Material Silicone
Cure Not
Adheres to
Wets most
Thermal conductivity
(k)(BTU)in)/(hr)(ft 2) (°F)
Extremely High
Electrical Insulation
Volume Resistivity
Very High
*M=Metal PA=Paper Products C=Ceramic W=Wood PL=Plastic
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Rated 4 out of 5 by from Very Good Thermal Conductivity. The product was easy to apply (Not quite as thick as typical peanut butter - never tried it on bread though). I was hoping it would be thicker and provide some mechanical strength to hold the thermocouple in place, but that's not quite the case. I ended up using polyimide high temperature tape to hold the thermocouple in place. A dab larger than, say, a 1/8" sphere, might drip if on the gravity side of a surface parallel to the earth (Upside down) It seemed to work well to get the temperature of the material I was measuring to saturate the thermocouple device. The product is good, but I may look for something similar to epoxy if I can remove it easier than epoxy.
Date published: 2016-12-21
Rated 5 out of 5 by from Great Product I used this on a mini Molder and Extruder and it is all it says it is. The temperature response on the J type sensors was more steady on units.
Date published: 2018-06-20
Rated 4 out of 5 by from senior technician good to use for solid state relay and probe temperature
Date published: 2022-03-21
Rated 5 out of 5 by from Good quality We did not have any issues with it and we are purchasing over 3 years
Date published: 2021-04-29
Rated 4 out of 5 by from Great use for thermal testing. While a great product, having issues getting product
Date published: 2020-05-19
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What is the thermal conductivity of the paste? In the table, you have specified Thermal conductivity 16 kBTU in/(hr ft 2 °F). In the manual pdf, the Thermal conductivity specified there is 16 BTU in/(hr ft 2 °F). Which one is right?

Asked by: Alex88
The correct Thermal Conductivity value is 16 BTU in/(HR ft 2 F) for the OT-201.
Answered by: ApplicationsEngineerANB
Date published: 2020-09-04

What is the vapor pressure of Omega201 at 20 degrees celsius?

Asked by: mariaT
Hi MariaT, Thank you for the inquiry. SDS data sheet describes vapor pressure as negligible. Best regards, OMEGA
Answered by: NorwalkAE_RS
Date published: 2024-02-20

Do you have a thermal paste that can be used inside freeze dryers with temperature as low as -60C?

Asked by: Suken Nayak
Thank you for your inquiry. Unfortunately, we do not have a paste that can be used at this temperature.
Answered by: Application Engineer CB
Date published: 2023-07-12

Is this paste available in a smaller box? The 16oz seems to be too much for my application and a lot of it would be wasted. The website says that the paste is available in 1/2 and 2 oz jars. But I did not find a option to select it

Asked by: ad09
Thank you for your inquiry ad09. Unfortunately, the smaller quantities of the OB-201 have been discontinued. The only size we currently offer is the 16 oz.
Answered by: Application Engineer MC
Date published: 2023-06-03

can you provide viscocity numbers so we can determine if pneumatic syringe application is an option.

Asked by: Monarch
Thank you for your inquiry. Unforunately we have no viscosity information for this product.
Answered by: ENGINEER CB
Date published: 2022-10-27

I see that our container has an expiration date. Can you clarify what properties of the paste change or lessen after the expiration date? (in other words, does it get stiffer, get less conductive, etc?)

Asked by: SapFlow_user
Thank you for your inquiry. If material is properly stored, there should be no loss of performance or properties past the expiration date. We do not have any test data to determine if there will be any physical changes, except maybe the material can dry out. Prior to the expiration date the OT-201-1/2 will meet all the published specifications.
Answered by: Application Engineer JB
Date published: 2022-03-16

What is the cleanup process when applied on metallic and/or ceramic substrates? Thanks in advance.

Asked by: Rhoneil
Solvents for clean up are; Alcohol or MEK or Xylene
Answered by: NorwalkAE_RS
Date published: 2019-08-25

Country of Origin for the Silicone Grease Part# OT-201-1-2?

Asked by: Dan12
Hi, the United States is the country of origin. Thanks for connecting with Omega.
Answered by: Jane
Date published: 2019-05-30
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