Omega Products THERMCOAT User Manual
Thermcoat Cement
and Lacquer Kit
OMEGA’s thermcoat kit is used for cementing fine-gage
thermocouples in place on metal, plastic and ceramic
surfaces and for assembling and installing thermopiles,
temperature probes and thermocouple bolometers.
Each THERMCOAT KIT includes:
⻬ THERMCOAT CO (zinc phosphate cement)
⻬ THERMCOAT COL (liquid for zinc phosphate cement)
⻬ THERMCOAT SL (heat-curing silicone lacquer)
⻬ CC HIGH TEMP CEMENT
(high temperature cement binder and filler)
⻬ Assorted Fine-Gage Ceramic Insulators
⻬ Assorted Fine-Gage Tubing
⻬ Brushes, Corkscrew, and Assorted Sleeving
THERMCOAT CO and THERMCOAT COL
This is a fast-setting 2-part zinc phosphate cement which
should be worked at temperatures between 16 and 27°C
(60 and 80°F). Work with very small quantities. Once cement
has set, it cannot be reworked. Cements mixed too thinly,
resulting from an excess of liquid COL, may cause spurious
voltaic emfs to be generated in fine-gage thermocouples. Before
applying cement, thoroughly clean surface and thermocouples
and remove all contamination. Shelf life in excess of 2
1
⁄2 years.
THERMCOAT SL is a heat-curing silicone lacquer used for
insulating thermocouples and lead wires. It is useful
from -145 to 230°C (-230 to 450°F).
Specifications
Color: Dark brown
Nonvolatile Content: 49.0% after 3-hr @ 135°C (275°F)
Specific Gravity: 1.01 @ 25°C (77°F)
Viscosity: 110 @ 25°C (77°F), centipoises
Flash Point, Open Cup: 32°C (90°F)
Solvent: Xylene
Drying Time: 2.5 hr @ 200°C (392°F)
After Curing 6 hr @ 200°C (382°F)
Dielectric Strength, 2" Electrodes: 2000 V/mil
Dissipation Factor @ 25°C (77°F):
100 Hz: 0.010
100 kHz: 0.007
Dielectric Constant @ 25°C (77°F):
100 Hz: 3.10
100 kHz: 2.98
Surface Resistivity, Ω: 1 x 1014
Volume Resistivity, Ω-cm: 2 x 1014
Weight Loss, Solvent-Free Varnish: 6.4% after 3-hr/250°C
(482°F)
Thermal Conductivity: 0.35 x 10–3 cal/sec (cm)°C
Moisture Vapor Transmission: 4.6 g/m
Heat Endurance at 250°C (482°F):
Flex Life: 690-hr
Craze Life: 1960-hr
Thermal Life, Curved Electrode Method:
Hr @ 300°C (572°F): 350
Hr @ 275°C (527°F): 1500
Hr @ 250°C (482°F): 4000
2
/day
AVAILABLE FOR FAST DELIVERY!
To Order (Specify Model Number)
Model No. Price Description
THERMCOAT $32 Cement and lacquer kit
Replacement Cement and Lacquer
Model No. Vial 1 oz 2 oz 4 oz
THERMCOAT CO-(*) $5 $6 $9 $12
THERMCOAT COL-(*) 56912
THERMCOAT SL-(*) 56912
* Indicate size: V, 1, 2, 4 (vial size is 0.5 oz).
OMEGA®CC High Temperature Cement
A porcelain-like cement consisting of 2 parts: a powder
filler and a liquid binder. Mix 3 parts filler to 1 part liquid by
weight, or 2 parts filler to 1 part liquid by volume. Hardens
with an internal chemical setting action with an initial set in
approximately 30 minutes and a final complete set in
18 to 24 hours at ordinary temperatures. The set may be
decreased to 30 to 60 minutes after application by baking up
to 80°C (175°F). The sodium silicate cement will withstand
temperatures up to 840°C (1550°F). It adheres to practically
all surfaces which are clean and free of oil and grease.
Physical Properties
Color....................................................Tan
Compressive Strength.........................3900 psi
Tensile Strength..................................425 psi
Absorption...........................................10 – 12%
Shrinkage............................................0.50%
Dielectric Strength...ASTM D-149—
Volume Resistivity...ASTM D-1829—
Dielectric Constant..............................5.0 – 7.0
Thermal Conductivity (K Factor)—
Coefficient of Thermal Expansion........4.6 x 10–6in/in/°F
Density................................................141 pcf
Maximum Service Temperature..........840°C (1550°F)
To Order (Specify Model Number)
Model No. Price Description
CC HIGH TEMP $18 Cement kit with 2.25 oz powder
CC BINDER 36 8 oz container of liquid binder
CC FILLER 36 8 oz container of powder filler
THERMCOAT
Starts at
$
32
Complete Cement
and Lacquer Kit
at 70°F..............25.0 to 51.0 Volts/mil
at 750°F............12.5 to 25.0 Volts/mil
at 1475°F..........up to 1.3 Volts/mil
at 70°F..............10
at 750°F............104– 106Ω-cm
at 1475°F..........102– 103Ω-cm
at 500°F...... 3.41 (BTU-inch)/(sq ft-hr-°F)
filler and 0.75 oz liquid binder
Size and Price
7
– 109Ω-cm
F
F-20
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