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CF Flanged Zero Length Non-Magnetic Fused Silica (Quartz) Viewports

Non-Magnetic CF Flanged Fused Silica (Quartz) Viewports Feature:

  • Built from the highest-quality materials to UHV standards
  • Compatible with vacuum systems capable of reaching UHV levels
  • Fused Silica (Quartz) glass is bonded to a CP-GRADE 5 titanium sleeve and mounted to a 316LN stainless steel CF flange or a CP-Grade 5 titanium flange.
  • 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.

UV Fused Silica (Quartz) Features:

  • Leak Rate <2x10-10 atm cc/sec He
  • Parallelism <30 Arc Minutes
  • Temperature Range -100°C to 200°C
  • Surface Finish 40/20
  • Corning HPFS 7980 Fused Silica (Quartz)
  • Homogeneity Grade F
  • Inclusion Class 2
  • Transmission >90% @ 250nm (external)

DUV Fused Silica (Quartz) Features:

  • Leak Rate <2x10-10 atm cc/sec He
  • Parallelism <10 Arc Seconds
  • λ/4 @ 632nm Transmitted Wavefront
  • Temperature Range -100°C to 200°C
  • Surface Finish 20/10
  • Corning HPFS 7980 Fused Silica (Quartz)
  • Homogeneity Grade A
  • Inclusion Class 0
  • Transmission ≥99.8% @ 248nm (internal)

CAUTION: For safety, we strongly recommend that no viewport is exposed to a temperature ramp of greater than 2-3°C per minute, and that no viewport be exposed to direct thermal radiation. To limit thermal gradients when heating viewports, we recommend the viewing area and the flange be covered with many layers of aluminum foil to act as a reflective shield.

Dimensional Drawings

Charts

Viewport Cleaning
Procedure Guide
For a guide on Viewport Cleaning Procedures, please click here.
Contact Us
To speak with someone directly, please call 1-412-387-9200 or email international@lesker.com.
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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
Sleeve Flange
Material
Glass
Type
Dim
A
Dim
B
Dim
C
Glass
Thickness
PartNo Price Add Item
VacuCADSM
Flange
Size/OD
Sleeve Flange
Material
Glass
Type
Dim
A
Dim
B
Dim
C
Glass
Thickness
PartNo Price Add Item
VacuCADSM
1-1/3" Titanium 316LN SST DUV Fused Silica (Quartz) 0.60 0.35 0.27 0.09
VPZL-133DUNM
$655.00
(please log in)
1-1/3" Titanium Titanium DUV Fused Silica (Quartz) 0.60 0.35 0.27 0.09
VPZL-133DUTI
P.O.R.
(please log in)
1-1/3" Titanium 316LN SST UV Fused Silica (Quartz) 0.60 0.35 0.27 0.09
VPZL-133QNM
$536.00
(please log in)
1-1/3" Titanium Titanium UV Fused Silica (Quartz) 0.60 0.35 0.27 0.09
VPZL-133QTI
P.O.R.
(please log in)
2-3/4" Titanium 316LN SST DUV Fused Silica (Quartz) 1.40 0.50 0.38 0.13
VPZL-275DUNM
$788.00
(please log in)
2-3/4" Titanium Titanium DUV Fused Silica (Quartz) 1.40 0.50 0.38 0.13
VPZL-275DUTI
P.O.R.
(please log in)
2-3/4" Titanium 316LN SST UV Fused Silica (Quartz) 1.40 0.50 0.38 0.13
VPZL-275QNM
$639.00
(please log in)
2-3/4" Titanium Titanium UV Fused Silica (Quartz) 1.40 0.50 0.38 0.13
VPZL-275QTI
P.O.R.
(please log in)
4-1/2" Titanium Titanium DUV Fused Silica (Quartz) 2.69 0.68 0.41 0.25
VPZL-450DUTI
P.O.R.
N/A
4-1/2" Titanium Titanium UV Fused Silica (Quartz) 2.69 0.68 0.41 0.25
VPZL-450QTI
P.O.R.
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)
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)
Fully Annealed Copper Gasket
1-1/3" (DN16CF)
5
1/4 (0.11)
--
VZCUA19
$15.00
(please log in)
Fully Annealed Copper Gasket
2-3/4" (DN35-DN40CF)
5
1/4 (0.11)
--
VZCUA38
$21.30
(please log in)
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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