Four Hole Round Ceramic Tube Insulators

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. Unless otherwise noted they can also be supplied in longer lengths (up to 24 inches long). 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"

Four Hole Round Ceramic Tube Insulator, UOM=EA
Part No.	OD (in)	ID (in)	ship wt.	Quantity In Stock	Price	Quantity to order
R1230	0.031	0.005	0.25	CALL(#)	$21.50
R1231	0.047	0.010	0.25	CALL(#)	$19.00
R42	0.062	0.016	0.25	CALL(#)	$17.35
R43	0.094	0.026	0.25	CALL(#)	$17.35
R1233	0.094	0.020	0.25	CALL(#)	$13.50
R41	0.125	0.020	0.25	CALL(#)	$12.25
R1235	0.156	0.031	0.25	CALL(#)	$11.50
R1236	0.187	0.031	0.25	CALL(#)	$19.75
R40	0.250	0.062	0.25	CALL(#)	$16.50
(#) Standard lead-time for out-of-stock items is approximately two weeks.
Ordering information. International (non-US) prices available through your local dealer.

* Prices given as per 6 inches.

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ADDRESS: Scientific Instrument Services, 1027 Old York Rd., Ringoes, NJ 08551.