Skip to search Skip to main content Skip to navigation

OB-400

High Temperature Cements

2.0

(4)

Click and hold to zoom

Choose a Variant

Operating Temperature, Max

1425 °C 980 °C 1205 °C 0 °C

Material Construction Option

High Thermal Conductivity Cement Low Expansion Cement Coating Cement, Liquid part Coating Cement, Powder Part Air Set Cement Kit

See all Models

$77.28

Item# OB-400

Volume discounts available

Volume Discount Schedule

Quantity	Price each
1-4	$77.28
5-9	$73.42
10-24	$71.87
25-49	$68.78
50-99	$67.23
100+	$65.69

QTY

Added to Your Shopping Cart

In Stock

Lead Time (If not in stock): 4 weeks

+ Add to Project List

See Specs

Product Specs

<< See all Product Models

Brand
Applications	Coating, Embedding, Insulating
Color	Tan to gray
Dielectric Constant	3.4 to 4.5
Dielectric Strength Note	Dielectric Strength at 20°C:12.5 to 51.0 V/mil;Dielectric Strength at 400°C: ≤15 V/mil;Dielectric Strength at 795°C: ≤1.3 V/mil
Features	Higher thermal conductivity and coefficient of thermal expansion; high maximum temperature rating
Insulation Note	Volume Resistivity at 20°C: 10⁸-10⁹ ohm–cm;Volume Resistivity at 400°C: 10⁵-10⁶ ohm–cm;Volume Resistivity at 795°C: 10³-10⁴ ohm–cm
Material Construction Option	High Thermal Conductivity Cement
Mechanical Strength Properties	Tensile Shear Strength: 325 psi; Compressive Strength: 3300 psi; Shear Strength: 375 psi
Mix Ratio By Weight	1-part cement; just mix powder with water to a smooth, uniform consistency
Operating Temperature, Max	1425 °C
Thermal Conductivity	11 BTU-in/h-ft2-°F
Thermal Expansion Coefficient	13.0 x 10^-6 in/in/°F
Volume	8 oz
Working Life	OMEGABOND 400® cures at room temperature by air drying in 18 to 24-hr, depending upon thickness and consistency; cure time can be accelerated by low temperature oven drying at 82°C (180°F); if the cement is to be exposed to elevated temperatures, cure for 18 to 24-hr at ambient temperature, then oven dry for 4-hr at 82°C (180°F) and for an additional 4-hr at 105°C (220°F), this helps to prevent spilling.
See All Specs Show Less

PDFs & Manuals

OB-OMEGABOND-AIR-SET_spec OB-OMEGABOND-AIR-SET View More

View Less

Compliance

View Less

current tab: Reviews

Reviews

Show Ratings & Reviews

2.0

(4)

Rated 1 out of 5 by Bree from Doesn't bond to Ready-Made Thermocouples For whatever reason this stuff does not bond to the Ready-Made ThermoCouples. It bonds to metal just fine. Forwarded concerns on this issue. "There are only a few possibilities – The mixture is not correct; the curing time is not sufficient or there has not been enough applied. An outside possibility is the material is no longer viable" ????? "We let it sit over the weekend. It seems to have set up good. There was some left over in the cap we mixed it in and it was hard as a rock. It just isn’t bonding to the wire. There was plenty applied. Material is not viable as in the bonding agent is possibly bad? Sticker on it says use before 3/2018" No response after that...... Had to figure something else out.

Date published: 2017-06-02

Rated 1 out of 5 by Ryan Essenmacher from Issues with mixing and curing. Unclear mixing instructions, susceptible to oil even at low temperatures (40°C), and doesn't like to stick to Kapton surface mount thermocouples. You need to apply pressure during the cure and rough up the surface for any hope for it to bond to the Kapton surface mount thermalcouples. I won't be purchasing this 1 part cement again, going with a 2 part for hopefully better results.

Date published: 2024-07-23

Rated 5 out of 5 by Devin H from Amazing product! I am using this to attach an aluminum heat sink to an IC on some circuitboards. The thermal conductivity is amazing. It performs just as good as a high quality thermal epoxy, but it's easier to work with. I followed the instructions in the data sheet and it becomes rock hard when fully cured.

Date published: 2023-11-20

Rated 1 out of 5 by Manu khod from Doesn't work at high temperatures I had bought OB700 and OB400 and they are claimed to be working at high temperatures. Unfortunately, they are a waste at high temperatures (500-600C) and lose strength like anything. As soon as i bring them to room temperature, they offer some strength. Clearly, they are not high-temperature cements. They are just regular ceramic powder grounded.

Date published: 2022-01-17