XC / XC 4 - Nextel Braided Ceramic Very High Temperature Sleeving

Very High Temperature Sleeving
Nextel Ceramic or 96% Silica

XC / XC4 / XS

	Six Sizes
	1/16", 1/8", 3/16", 3/8", 1/4", 1/2" DiameterThermocouple Wire Insulation
	Low Thermal Conductivity
	Dimensionally Stable
	Non-Hygroscopic
	Maintains Strength at Higher Temperatures

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.

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.

Nextel 312

	1200°C (2200°F ) Continuous Rating
	1425°C (2600°F) Short Term Rating

Nextel 440

	1375°C (2500°F) Continuous Rating
	1550°C (2800°F) Short Term Rating
Silica (96% SiO₂)
	982°C (1800°F) Continuous Rating
	1550°C (2800°F) Short Term Rating

Chemical	Percent Strength Retention*
NH₄OH (ammonium hydroxide)	78
HCI (hydrochloric acid)	85
H₂SO₄ (sulfuric acid)	38
H₃PO₄ (phosphoric acid)	less than 1
NaOH (sodium hydroxide)	less than 1
KOH (potassium hydroxide)	less than 1
CaO (calcium oxide-lime)	48

*After exposure exposure to percent chemical baths.

To Order (Specify Model No.) Prices Shown in U.S. Dollars

Nextel 312
Model No.	Nominal Inside Dia.	Wall Thickness	*Coverage%**	Picks per in.	Yards/Lb.	Price per ft.
*XC-116-()**	1/16"	.029	92	13	85	$1.50
*XC-18-()**	1/8"	.032	83	13	36	$2.75
*XC-316-()**	3/16"	.035	91	11	27	$3.25
*XC-14-()**	1/4"	.036	81	12	25	$3.50
*XC-38-()**	3/8"	.037	72	10	17	$4.50
*XC-12-()**	1/2"	.045	71	11	12	$6.00

Nextel 440
Model No.	Nominal Inside Dia.	Wall Thickness	*Coverage%**	Picks per in.	Yards/Lb.	Price per ft.
*XC4-116-()**	1/16"	.029	92	13	85	$3.00
*XC4-18-()**	1/8"	.032	83	13	36	$6.25
*XC4-316-()**	3/16"	.035	91	11	27	$7.70
*XC4-14-()**	1/4"	.036	81	12	25	$8.50
*XC4-38-()**	3/8"	.037	72	10	17	$12.00
*XC4-12-()**	1/2"	.045	71	11	12	$16.25

Silica
Model No.	Nominal Inside Dia.	Wall Thickness	Price per ft.
*XS-116-()**	1/16"	.028	$1.50
*XS-18-()**	1/8"	.035	$2.50
*XS-316-()**	3/16"	.035	$3.00
*XS-14-()**	1/4"	.035	$3.25
*XS-38-()**	3/8"	.035	$4.00
*XS-12-()**	1/2"	.035	$5.25

*Stocked in 10, 25, 50 and 100 foot 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: XC4-116-(25), 1/16 Nextel 312 insulation, 1200°C (2200°F) continuous temperature rating, $1.50/ft. x 25 = $37.50.

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.