Vacuum Flanges

Blank Vacuum Flanges

These blank non-rotatable flanges are for sealing off ports, for drilling custom interfaces, feedthrus, or other accessories, and for modifications of vacuum equipment. These reliable, knife-edge flanges are the vacuum industry standard for ultra-high vacuum applications. They utilize flat OFHC copper gaskets for vacuum sealing below 10^-13 torr at temperature ranges from -196 degrees C to 500 degrees C. Manufactured from Type 304 stainless steel, all flanges will perfectly mate to other Conflat flanges of the same O.D.

Other flange types and sizes are available on request. Custom drilling, modifications, welding and fabrication are also available from our machine shop. Call SIS with your requirements or send drawings for a quotation.

• Flange Hardware
• Copper Gaskets

Blank Non-Tapped Flanges

Blank Non-Tapped Flange, UOM=EA
Part No.	OD (in)	Thickness (in)	# Bolts	Bolt Diameter (in)	Bolt Cir Diameter (in)	Cu Gask	ship wt.	Quantity In Stock	Price	Quantity to order
133X000	1.33	0.28	6	0.172	0.060	CG-300	2	0(#)	$12.00
212X000	2.12	0.470	4	0.265	1.625	CG-400	2	1	$19.50
275X000	2.73	0.500	6	0.265	2.132	CG-500	2	0(#)	$15.00
338X000	3.37	0.625	8	0.332	2.850	CG-700	2	0(#)	$32.00
450X000	4.47	0.680	8	0.332	3.628	CG-1000	2	0(#)	$47.50
462X000	4.62	0.750	10	0.332	4.030	CG-1200	2	0(#)	$50.00
600X000	5.97	0.780	16	0.332	5.128	CG-1500	2	2	$65.00
675X000	6.75	0.840	18	0.332	5.969	CG-1800	2	0(#)	$80.00
(#) Standard lead-time for out-of-stock items is approximately two weeks.
Ordering information. International (non-US) prices available through your local dealer.

Blank Tapped Flanges

Blank Tapped Flanges, UOM=EA
Part No.	OD (in)	Thickness (in)	# Bolts	Bolt Diameter (in)	Bolt Cir Diameter (in)	Cu Gask	Bolts	ship wt.	Quantity In Stock	Price	Quantity to order
133X000T	1.33	0.28	6	0.172	1.060	CG-300	#8-32	2	0(#)	$16.00
212X000T	2.12	0.470	4	0.265	1.625	CG-400	1/4-28	2	0(#)	$18.00
275X000T	2.73	0.500	6	0.265	2.312	CG-500	1/4-28	2	0(#)	$20.00
338X000T	3.37	0.625	8	0.332	2.850	CG-700	5/16-24	2	0(#)	$40.00
450X000T	4.47	0.680	8	0.332	3.628	CG-1000	5/16-24	2	0(#)	$55.00
462X000T	4.62	0.750	10	0.332	4.030	CG-1200	5/16-24	2	0(#)	$60.00
600X000T	5.97	0.780	16	0.332	5.128	CG-1500	5/16-24	2	0(#)	$85.00
675X000T	6.75	0.840	18	0.332	5.969	CG-1800	5/16-24	2	0(#)	$95.00
(#) Standard lead-time for out-of-stock items is approximately two weeks.
Ordering information. International (non-US) prices available through your local dealer.

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