Ceramic Thermocouple Insulators

 

Alumina | Cordierite | Mullite | Steatite | Glass Insulation

Richards ceramic insulators for Thermocouple Elements are made from the highest quality raw materials and carefully blended for superior mechanical strength, resistance to thermal shock and excellent insulating properties at high temperatures. Ceramic insulators are available in Alumina, Cordierite, Mullite, and Steatite. Strict attention to hole size, wall thickness, and other details result in minimum breakage during installation on the thermocouple element. Our oval type thermocouple insulators are designed to allow two thermocouple elements to be installed in a single protection tube. The part numbers listed below describe the physical dimensions of the all of our thermocouple insulators.

Example: Part number 823-O signifies an 8 Gauge insulator, two holes, three inches long, oval in shape and Cordierite construction..

Ceramic Insulator Specifications

  • Large variety of sizes in stock
  • Available in Alumina, Cordierite, Mullite, and Steatite
  • Available in single, double and four bore sizes
  • Custom cut to length sizes
  • Small or large quantites
Insulators | Cordierite | 1, 2, and 4 Bore
Ceramic Thermocouple Insulators
Part Number
Gauge

Number of Holes

Length (Incess) O.D.(Inches) Hole Diameter (Inches) Pounds/1000
811 6-8 1 1 .340 .204 5.5
811-S 8 1 1 .250 .156 2.4
813-S 8 1 3 .250 .156 7.2
1411 14 1 1 .220 .090 2.5
1411-S 14 1 1 .140 .080 1.0
1611 16 1 1 .140 .060 .950
2011* 20 1 1 .090 .040 0.5
821 6-8 2 1 .500 .188 10.0
823 6-8 2 3 .500 .188 30.0
1421 14 2 1 .250 .080 3.0
1423 14 2 3 .250 .080 9.0
2021 20 2 1 .150 .042 1.3
2023 20 2 3 .150 .042 3.9
2223 22 2 3 .120 .030 2.3
3023 30 2 2 .062 .015 .6
82-1/2-O 6-8 2 1/2 .05 x.28 .188 2.8
821-O 6-8 2 3 .05 x .28 .188 5.6
823-O 6-8 2 1 .05 x .28 .188 17.0
1021-O 10 2 1 .435 x.250 .143 4.3
1121-O 11 2 1 .35 x .22 .110 3.7
142-1/2-O 14 2 1/2 .31 x .19 .090 1.4
1421-O 14 2 1 .31 x .19 .090 2.7
1423-O 14 2 3 .31 x .19 .090 8.0
2121-O 20 2 1 .17 x .12 .042 1.2
2023-O 20 2 3 .17 x .12 .042 3.5
841 8 4 1 .500 .140 8.5
1441 14 4 1 .315 .080 5.0
2041 20 4 1 .188 .040 2.0
*Material is 96% Alumina (3450°F or 1900°C) all others are Corderite (2012°F or 1100°C)

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