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Very High Temperature Sleeving
Nextel® Ceramic or 96% Silica
Nextel 312 is an Alumina-Borica-Silica fiber that is braided without
the aid of organic, glass or metal inserts. This sleeving retains
strength and flexibility at continuous exposure to 1200°C (2200°F).
Short exposures to 1425°C (2600°F) can be tolerated. Most common
metals (except molten copper and tin) do not attack the fibers.
Because Nextel 312 Ceramic Fibers contain no residual acids
or chlorides, there are no chemicals present to corrode or etch
the wires. Even in a test involving exposure to 96 percent
relative humidity, no noticeable electrolytic
corrosion was detected.
Not recommended for use in abrasive
environments without the protection of Inconel®
overbraiding or a thermowell.
1200°C (2200°F)
Continuous
Exposure Braided
Ceramic Sleeving.
U Six Sizes
U 1.5, 3.0, 4.5, 6.0, 9.0, 12 mm
1
⁄16, 1⁄8, 3⁄16, 1⁄4, 3⁄8, 1⁄2") Diameter
(
Thermocouple Wire Insulation
U Low Thermal Conductivity
U Dimensionally Stable
U Non-Hygroscopic
U Maintains Strength at Higher
Temperatures
Effects of Chemicals on XC Sleeving
Chemical Strength
Retention*
NH
HCl
H
H
NaOH
KOH
CaO
After exposure to 10 percent chemical baths.
*
does not recommend this material for food,
cosmetic, medical, or pharmaceutical use.
(ammonium hydroxide)
OH
4
(hydrochloric acid)
(sulfuric acid)
2SO4
(phosphoric acid)
3PO4
(sodium hydroxide)
(potassium hydroxide)
(calcium oxide-lime)
This material is intended for industrial
applications only. In addition, OMEGA
38
78
85
less than 1
less than 1
less than 1
48
Percent
Nextel 312
To Order
Visit omega.com/xc_xc4_sleeving for Pricing and Details
Nextel 312 Nextel 440 Dimensions: mm (inch)
Nom. Wall Cov.**
Model No. Model No.
ID Thickness % per inch lb
Picks/ Yards/
XC-116 XC4-116 1.5 (1⁄16) 0.74 (0.029) 92 13 85
XC-18 XC4-18 3.0 (1⁄8) 0.81 (0.032) 83 13 36
XC-316 XC4-316 4.5 (3⁄16) 0.89 (0.035) 91 11 27
XC-14 XC4-14 6.0 (1⁄4) 0.92 (0.036) 81 12 25
XC-38 XC4-38 9.0 (3⁄8) 0.94 (0.037) 72 10 17
XC-12 XC4-12 12 (1⁄2) 1.1 (0.045) 71 11 12
Silica Dimensions: mm (inch)
Nominal Wall
Model No. Inside Diameter Thickness
XS-116 1.5 (1⁄16) 0.71 (0.028)
Silica Insulation
Available
XS-18 3.0 (1⁄8) 0.89 (0.035)
XS-316 4.5 (3⁄16) 0.89 (0.035)
XS-14 6.0 (1⁄4) 0.89 (0.035)
XS-38 9.0 (3⁄8) 0.89 (0.035)
XS-12 12 (1⁄2) 0.89 (0.035)
Stocked in 10, 25, 50 and 100' lengths.
% coverage is the sleeve length when it is expanded to the nominal inside diameter as compared to the relaxed length.
**
(Measured length x % coverage = actual length covered.) Note: The length is measured when the sleeving is empty and in a relaxed state.
Ordering Example: XC-14-25, 25' of 1⁄4" Nextel 312 insulation, 1200°C (2200°F) continuous temperature rating.
Note: Published price is based on market value at time of printing and is subject to change due to fluctuations in value of raw material.
H-23
U 1200°C (2200°F)
Continuous Rating
U 1425°C (2600°F)
Short Term Rating
Nextel 440
U 1375°C (2500°F)
Continuous Rating
U 1550°C (2800°F)
Short Term Rating
2
Silica (96% SiO
)
U 982°C (1800°F)
Continuous Rating
Silica is chemically compatible
in many environments such
as air, oxygen, nitrogen,
argon, ammonia, carbon
monoxide, chlorine, hydrogen
chloride and sulfur dioxide.
It is also stable in a vacuum,
in contact with water, various
hydrocarbons, ammonium
hydroxide, and hydrochloric,
nitric, and sulfuric acids.
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