Description
The following four hole alumina ceramic tube type insulators are available in six inch lengths. The tubes are constructed of a pure 99% alumina ceramic that has superior gas and vacuum tightness and excellent insulating properties even at elevated temperatures. They are recommended for use in mass spectrometers and other vacuum systems as feed through lines, thermocouple insulators, and in other applications requiring electrical and thermal insulators. Other Styles are also available - one hole, two hole and solid rods.
The following ceramic tubes are supplied in 6 inch lengths only. We can also custom cut shorter lengths to your specifications. Contact Us with your specific requirements.
Other sizes available on request
Tolerances on all diameters are ±0.005"
* Prices shown are per 6 inch long piece.
Four Hole Round Ceramic Tube Insulator | |||||
Part No. | OD (in) | ID (in) | Stock/ Lead Time |
Price EA |
Order |
---|---|---|---|---|---|
R1230 | 0.031 | 0.005 | 12 | CALL | |
R1231 | 0.047 | 0.010 | 48 hours*Standard lead time for ceramics is 48 hours. | CALL | |
R42 | 0.062 | 0.016 | 48 hours*Standard lead time for ceramics is 48 hours. | $16.65 | |
R43 | 0.094 | 0.026 | 48 hours*Standard lead time for ceramics is 48 hours. | $20.25 | |
R1233 | 0.094 | 0.020 | 3 | $28.61 | |
R41 | 0.125 | 0.020 | 7 | CALL | |
R1235 | 0.156 | 0.031 | 48 hours*Standard lead time for ceramics is 48 hours. | CALL | |
R1236 | 0.187 | 0.031 | 48 hours*Standard lead time for ceramics is 48 hours. | CALL | |
R40 | 0.250 | 0.062 | 48 hours*Standard lead time for ceramics is 48 hours. | CALL | |
R49 | 0.250 | 0.078 | 48 hours*Standard lead time for ceramics is 48 hours. | CALL | |
R1238 | 0.218 | 0.050 | 48 hours*Standard lead time for ceramics is 48 hours. | CALL | |
R1237 | 0.187 | 0.047 | 48 hours*Standard lead time for ceramics is 48 hours. | CALL | |
R47 | 0.158 | 0.040 | 48 hours*Standard lead time for ceramics is 48 hours. | CALL | |
* Standard lead time for ceramics is 48 hours. | |||||
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Solid Round Ceramic Insulator Rods
The following solid alumina ceramic rod type insulators are available in six inch lengths.Single Hole Round Ceramic Tube Insulators
The tubes are constructed of a pure 99% alumina ceramic that has superior gas and vacuum tightness and excellent insulating properties even at elevated temperatures.Two Hole Round Ceramic Tube Insulators
The following two hole alumina ceramic tube type insulators are available in six inch lengths.Ceramic Washer Insulators
A wide variety of alumina ceramic washers.Stepped Insulators
Stepped insulators made from alumina ceramic.Alumina Fish Spine Beads - 99.5% Alumina
High quality alumina fish spine beads are used for electrical insulation of wires and leads.

