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Made for electrically isolating thermocouple wire inside a protection tube, this four-hole round insulator is made of recrystallized pure alumina. It is rated for continuous service up to 1900°C (3450°F). It has a 1/32" (0.79 mm) bore, a 3/16" (4.76 mm) OD, and runs 6" (15.2 cm) long. Supplied as a pack of 5, it works great for thermocouple assembly in furnaces and kilns.
Made for electrically isolating thermocouple wire inside a protection tube, this four-hole round insulator is made of recrystallized pure alumina. It is rated for continuous service up to 1900°C (3450°F). It has a 1/32" (0.79 mm) bore, a 3/16" (4.76 mm) OD, and runs 6" (15.2 cm) long. Supplied as a pack of 5, it works great for thermocouple assembly in furnaces and kilns.
OMEGATITE(R) 350 This is an impervious, recrystallized pure alumina ceramic containing over 99% Al2O3. It has superior gas and vacuum tightness and electrical insulating properties at elevated temperatures.
It is non-reactive and compatible with tungsten and molybdenum thermocouple alloys. The maximum service temperature is 3450°F (1900°C).
The diameter and "out of roundness" of OMEGA's insulators is plus or minus 5% or +/-0.015", whichever is greater. The straightness is at least 1/32 inch for each six-inch length.
The following table lists the maximum recommended wire diameters which should be used with six-inch sections. Closer tolerances are permissible with shorter sections, but the minimum clearance tolerance is 5% or +/-0.015", whichever is greater.
OMEGA(R) thermocouple insulators are supplied in a wide range of sizes. Sizes up to 1/4 inch O.D. are available from stock. Other sizes and lengths by quotation.
Applications
| Water absorption | 0.00 |
| Gas permeability | Gas Tight |
| Diameter and out-of-roundness tolerance | ±5% or ±0.015", whichever is greater |
| Straightness | at least 1/32" per six-inch length |
| Minimum clearance tolerance | 5% or ±0.015", whichever is greater |
| Material | OMEGATITE 350 |
| Constitution | 99% Al2O3 |
| Specific gravity | 3.7 |
| Compressive strength | 300,000 psi |
| Tensile strength | 30,000 psi |
| Transverse strength | 55,000 psi |
| Maximum service temperature | 3450°F (1900°C) |
| Dielectric constant (1MC) | 8.61 |
| Dielectric strength | 250 volts/mil |
| Volume resistivity | 10^13 ohm cm |
| Te value | 1100°C |
| Hardness (Mohs scale) | 9 |
| Fabrication method | Cast or Extrusion |
| Dimensions | 3/16" O.D. Inside diameter: 1/32" Length: 6" |
| Water absorption | 0.00 |
| Gas permeability | Gas Tight |
| Diameter and out-of-roundness tolerance | ±5% or ±0.015", whichever is greater |
| Straightness | at least 1/32" per six-inch length |
| Minimum clearance tolerance | 5% or ±0.015", whichever is greater |
| Material | OMEGATITE 350 |
| Constitution | 99% Al2O3 |
| Specific gravity | 3.7 |
| Compressive strength | 300,000 psi |
| Tensile strength | 30,000 psi |
| Transverse strength | 55,000 psi |
| Maximum service temperature | 3450°F (1900°C) |
| Dielectric constant (1MC) | 8.61 |
| Dielectric strength | 250 volts/mil |
| Volume resistivity | 10^13 ohm cm |
| Te value | 1100°C |
| Hardness (Mohs scale) | 9 |
| Fabrication method | Cast or Extrusion |
| Dimensions | 3/16" O.D. Inside diameter: 1/32" Length: 6" |
