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Open Ended Cylindrical & Domed End Bell Jars

Made from Pyrex® to withstand thermal shock and chemical attack. Design to mates to our baseplates, feedthrough collars, or service wells with an L-shaped gasket.

Features

  • Made from Pyrex® to withstand thermal shock and chemical attack
  • Bottom of bell jar is ground flat to accept an L-gasket for sealing to our baseplates, feedthrough collars, or service wells
  • Inexpensive and transparent
  • Features good high-vacuum properties
  • Available in various diameters and lengths
  • Please note, although made of Pyrex, these are not designed for high optical transmission and they must be used with a guard, so are not suitable for applications where visibility and temperature measurements using optical pyrometry are required.

Inspecting and Using Pyrex Chambers

  • When receiving a glass chamber, immediately look for shipping damage. Any glass chamber will have a variety of small imperfections. We recommend you ignore small surface scratches and bubbles (either flattened and elongated, or tiny spheres) because they are difficult to avoid in manufacturing and handling thick glass, and will not adversely affect vacuum applications.
  • It is possible for there to be some marks from manufacturing that distort the optical transmission of the glass.
  • Do not ignore cracks, particularly those causing a distinct dark line more than an inch long in the bulk of the glass. A crack suggests shipping damage. If undamaged, re-pack the glass chamber in its original box until ready for installation. If you find damage, please contact us immediately for further instruction. We will do everything we can to rectify the situation.
  • During use, examine the glass chamber regularly for clouding, cracks, star formations (caused by point impact) or deep, long scratches. Clean the external surface using commercial glass cleaners. If the process clouds the internal surfaces, seek advice on the best method to remove the deposit. But remember, if you are depositing some "inert" or hard-coating material on a substrate, it will form an inert, hard layer on the glass. Do not compromise the vacuum by using cleaners that cannot wash away with water or clean solvent.
  • Never allow hydrogen fluoride (HF) near the glass chamber. It attacks glass, causing it to become opaque. Never use harsh abrasive, wire brushes, files, or metal scrapers on the glass surface. If the glass chamber becomes cracked or scarred, discard it immediately.
  • For safety reasons, a bell jar guard must be purchased and used with all Pyrex bell jars. The recommended guard can be found under the compatible parts menu of each part, along with the recommended L-shaped gasket.

Dimensional Drawings


Chamber Builder™
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Chambers FAQ
Click here for answers to some of the most common questions we get asked.
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

Supplementary Parts  = Click icon below to view Supplementary Parts.

Compatible
Parts
Description Height Chamber
O.D.
O.D.
Tolerance
O.H.
Tolerance
Thickness Open End
Flatness
PartNo Price Add
Item
VacuCADSM
DWG
2D
CAD
3D
CAD
3D
PDF
Compatible
Parts
Description Height Chamber
O.D.
O.D.
Tolerance
O.H.
Tolerance
Thickness Open End
Flatness
PartNo Price Add
Item
DWG
2D
CAD
3D
CAD
3D
PDF
Pyrex Bell Jar
12"
10.25"
1/8"
1/8"
4.8mm-10mm
0.007"
BJ10X12 $659.00
N/A N/A N/A N/A
Pyrex Bell Jar
18"
10.25"
1/8"
1/8"
4.8mm-10mm
0.007"
BJ10X18 $692.00
N/A N/A N/A N/A
Pyrex Bell Jar
12"
12.5"
1/8"
1/8"
4.8mm-10mm
0.007"
BJ12X12 $842.00
N/A N/A N/A N/A
Pyrex Bell Jar
12"
12"
1/8"
1/8"
4.8mm-10mm
0.007"
BJ12X12EURO $1,017.00
N/A N/A N/A N/A
Pyrex Bell Jar
18"
12.5"
1/8"
1/8"
4.8mm-10mm
0.007"
BJ12X18 $934.00
N/A N/A N/A N/A
Pyrex Bell Jar
18"
12"
1/8"
1/8"
4.8mm-10mm
0.007"
BJ12X18EURO $1,059.00
N/A N/A N/A N/A
Pyrex Bell Jar
12"
14.25"
1/8"
1/8"
4.8mm-11mm
0.007"
BJ14X12 $1,817.00
N/A N/A N/A N/A
Pyrex Bell Jar
18"
14.25"
1/8"
1/8"
4.8mm-11mm
0.007"
BJ14X18 $1,875.00
N/A N/A N/A N/A
Pyrex Bell Jar
21"
14.25"
1/8"
1/8"
4.8mm-11mm
0.007"
BJ14X21 $1,909.00
N/A N/A N/A N/A
Pyrex Bell Jar
18"
15.375"
1/8"
1/8"
4.8mm-11mm
0.010"
BJ15X18 $1,850.00
N/A N/A N/A N/A
Pyrex Bell Jar
24"
15.375"
1/8"
1/8"
4.8mm-11mm
0.010"
BJ15X24 $1,900.00
N/A N/A N/A N/A
Pyrex Bell Jar
30"
15.375"
1/8"
1/8"
4.8mm-11mm
0.010"
BJ15X30 $1,909.00
N/A N/A N/A N/A
Pyrex Bell Jar
12"
18"
1/8"
1/4"
4.8mm-11mm
0.010"
BJ18X12 $2,150.00
N/A N/A N/A N/A
Pyrex Bell Jar
18"
18"
1/8"
1/4"
4.8mm-11mm
0.010"
BJ18X18 $2,159.00
N/A N/A N/A N/A
Pyrex Bell Jar
24"
18"
1/8"
1/4"
4.8mm-11mm
0.010"
BJ18X24 $2,195.00
N/A N/A N/A N/A
Pyrex Bell Jar
30"
18"
1/8"
1/4"
4.8mm-11mm
0.010"
BJ18X30 $2,255.00
N/A N/A N/A N/A
Pyrex Cylinder (Open Ended)
12"
12.5"
1/8"
1/8"
4.8mm-11mm
0.007"
CY12X12 P.O.R.
N/A N/A N/A N/A
Pyrex Cylinder (Open Ended)
18"
12.5"
1/8"
1/8"
4.8mm-11mm
0.007"
CY12X18 $1,092.00
N/A N/A N/A N/A
Pyrex Cylinder (Open Ended)
24"
12.5"
1/8"
1/8"
4.8mm-11mm
0.007"
CY12X24 $1,175.00
N/A N/A N/A N/A
Pyrex Cylinder (Open Ended)
12"
18"
1/8"
1/4"
4.8mm-11mm
0.010"
CY18X12 $1,167.00
N/A N/A N/A N/A
Pyrex Cylinder (Open Ended)
18"
18"
1/8"
1/4"
4.8mm-11mm
0.010"
CY18X18 $1,684.00
N/A N/A N/A N/A
Pyrex Cylinder (Open Ended)
21"
18"
1/8"
1/4"
4.8mm-11mm
0.010"
CY18X21 $2,117.00
N/A N/A N/A N/A

Supplementary Parts  = Click icon below to view Supplementary Parts.

 

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