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Flanges & Components > Viewports & Shutters > ConFlat (CF) Flanged Viewports

CF Flanged Zero Length Exotic Glass Viewports

CF Flanged Exotic Glass Viewports Features:

  • Built from the highest-quality materials to UHV standards
  • Compatible with vacuum systems capable of reaching UHV levels
  • Viewports should be sealed with fully annealed copper gaskets to reduce induced strain
  • If the process deposits material, we strongly recommend a viewport shutter because deposits can damage and impair the optical properties of the lens.

Exotic Glass Features:

  • Leak Rate <2x10-10 atm cc/sec He
  • Parallelism <3 Arc Minutes
  • 304L Stainless Steel Flange
  • λ/4 @ 632nm Transmitted Wavefront

NOTE: All viewports are fragile and should be handled and mounted with extreme caution. CF flanged viewports require a fully annealed copper gasket. Never scratch the viewing area-a weakened viewport may implode (or explode under wrong conditions). Make sure the "glass" chosen has a reasonable transmission at the wavelengths of interest. And remember, what is not transmitted may be reflected or absorbed.

Viewport Cleaning Procedure Guide For a guide on Viewport Cleaning Procedures, please click here.


Dimensional Drawings

Charts

Got VacuCADSM?
VacuCAD is a free library containing thousands of 2D CAD drawings (in DXF format) and 3D Models (in STP format) for many of our standard vacuum components and chambers. Please Log in

Ordering Table

(Click column headers to sort data)

Flange
Size/OD
View
Area
Coating Window
Material
Window
Thickness
Temperature
Range
PartNo Price Add Item
VacuCADSM
Flange
Size/OD
View
Area
Coating Window
Material
Window
Thickness
Temperature
Range
PartNo Price Add Item
VacuCADSM
2-3/4" 0.9 N/A Calcium Fluoride
(20-10 Finish)
0.1 -100°C to 200°C
VPZL-275UC
$665.00
N/A
2-3/4" 0.9 N/A Magnesium Fluoride
(20-10 Finish)
0.1 -100°C to 200°C
VPZL-275UM
$665.00
N/A
2-3/4" 0.9 N/A Zinc Selenide
(40-20 Finish)
0.1 -100°C to 200°C
VPZL-275UZ
$665.00
N/A
2-3/4" 0.9 8-12 Microns
R(avg) < 0.5%
Per Surface
(Coated Both Sides)
Zinc Selenide
(40-20 Finish)
0.1 -100°C to 150°C
VPZL-275UZC
$881.00
N/A
4-1/2" 1.88 N/A Calcium Fluoride
(20-10 Finish)
0.15 -100°C to 200°C
VPZL-450UC
$2,158.00
N/A
4-1/2" 1.88 N/A Magnesium Fluoride
(20-10 Finish)
0.15 -100°C to 200°C
VPZL-450UM
$2,596.00
N/A
4-1/2" 1.88 N/A Zinc Selenide
(40-20 Finish)
0.15 -100°C to 200°C
VPZL-450UZ
$2,596.00
N/A
4-1/2" 1.88 8-12 Microns
R(avg) < 0.5%
Per Surface
(Coated Both Sides)
Zinc Selenide
(40-20 Finish)
0.15 -100°C to 150°C
VPZL-450UZC
$3,600.00
N/A
Flange Selection Guide
With a variety of flanges to choose from, the Flange Selection Guide is designed to help you find one to meet your vacuum requirements. Shop Now!
Can't find the flange you need or want a custom configuration? Please call us at 1-412-387-9200 or email international@lesker.com with your inquiry.

Accessories Table

Description For Per Package Weight lbs (kg) Manual PartNo Price Add Item
VacuCADSM
Description For Per Package Weight lbs (kg) Manual PartNo Price Add Item
VacuCADSM
Viewport Shutters (Manual)
VPZL-275 Viewport
1
n/a
--
DS275VPS
$1,000.00
(please log in)
Viewport Shutters (Pneumatic)
VPZL-275 Viewport
1
n/a
--
DS275VPS-P
$1,747.00
(please log in)
Viewport Shutters (Manual)
VPZL-450 Viewport
1
n/a
--
DS450VPS
$1,092.00
(please log in)
Viewport Shutters (Pneumatic)
VPZL-450 Viewport
1
n/a
--
DS450VPS-P
$1,829.00
(please log in)
Viewport Shutters (Manual)
VPZL-463 Viewport
1
n/a
--
DS462VPS
$1,195.00
(please log in)
Viewport Shutters (Pneumatic)
VPZL-463 Viewport
1
n/a
--
DS462VPS-P
P.O.R.
(please log in)
Viewport Shutters (Manual)
VPZL-600 Viewport
1
n/a
--
DS600VPS
$1,221.00
(please log in)
Viewport Shutters (Pneumatic)
VPZL-600 Viewport
1
n/a
--
DS600VPS-P
P.O.R.
(please log in)
Viewport Shutters (Manual)
VPZL-800 Viewport
1
n/a
--
DS800VPS
$1,242.00
(please log in)
Viewport Shutters (Pneumatic)
VPZL-800 Viewport
1
n/a
--
DS800VPS-P
P.O.R.
(please log in)
1/4—28 x 1-3/8" Bolt & Nut Set
2-1/8" (DN25CF)
25
1 (0.45)
--
HBS25028138
$30.30
(please log in)
1/4—28 x 1-3/8" Bolt & Nut Set
2-3/4" (DN35-DN40CF)
25
1 (0.45)
--
HBS25028138
$30.30
(please log in)
5/16—24 x 1-3/4" Bolt & Nut Set
3-3/8" (DN50CF)
25
2 (0.91)
--
HBS31224175
$39.00
(please log in)
5/16—24 x 2" Bolt & Nut Set
4-1/2" (DN63CF)
25
2 (0.91)
--
HBS31224200
$33.00
(please log in)
5/16—24 x 2" Bolt & Nut Set
4-5/8" (DN75CF)
25
2 (0.91)
--
HBS31224200
$33.00
(please log in)
5/16—24 x 2" Bolt & Nut Set
6" (DN100CF)
25
2 (0.91)
--
HBS31224200
$33.00
(please log in)
5/16—24 x 2-1/4" Bolt & Nut Set
6-3/4" (DN125CF)
25
2 (0.91)
--
HBS31224225
$39.00
(please log in)
5/16—24 x 2-1/4" Bolt & Nut Set
8" (DN160CF)
25
2 (0.91)
--
HBS31224225
$39.00
(please log in)
5/16—24 x 2-1/2" Bolt & Nut Set
10" (DN200CF)
25
2 (0.91)
--
HBS31224250
$29.90
(please log in)
3/8—24 x 3" Bolt & Nut Set
13-1/4" CF
30
4 (1.81)
--
HBS37524300
$48.00
N/A
Fully Annealed Copper Gasket
6" (DN100CF)
5
1-1/2 (0.68)
--
VZCUA100
$32.00
(please log in)
Fully Annealed Copper Gasket
8" (DN160CF)
5
2 (0.91)
--
VZCUA150
$50.00
(please log in)
Fully Annealed Copper Gasket
1-1/3" (DN16CF)
5
1/4 (0.11)
--
VZCUA19
$15.00
(please log in)
Fully Annealed Copper Gasket
10" (DN200CF)
5
3 (1.36)
--
VZCUA200
$66.00
(please log in)
Fully Annealed Copper Gasket
2-1/8" (DN25CF)
5
1/4 (0.11)
--
VZCUA25
$20.20
N/A
Fully Annealed Copper Gasket
2-3/4" (DN35-DN40CF)
5
1/4 (0.11)
--
VZCUA38
$21.30
(please log in)
Fully Annealed Copper Gasket
3-3/8" (DN50CF)
5
1/2 (0.22)
--
VZCUA54
$24.60
N/A
Fully Annealed Copper Gasket
4-1/2" (DN63CF)
5
3/4 (0.34)
--
VZCUA64
$26.60
(please log in)
Fully Annealed Copper Gasket
4-5/8" (DN75CF)
5
1 (0.45)
--
VZCUA76
$27.90
N/A
Gasket Removal Tool
All CF Flanges
1
1/4 (0.11)
--
VZGRT
$38.00
N/A
4 oz. Tube Anti-Seize Thread Lube
All CF Flanges
1
1/4 (0.11)
--
VZTL-4OZ
P.O.R.
N/A

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