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Our online catalog is being updated! Please contact us for current pricing.
Glass Bell Jars
| Pyrex®
glass bell jars are designed to be used with flat base plates. The rimless
bottom edge of the jar is ground flat to accept a Viton®
L-shaped gasket and provide a positive seal of the jar to the base plate.
Pyrex glass has a strain point of 520°C and a coefficient of linear
expansion of 32.5 x 10-7 in/°C. Bakeout temperatures above
150°C are not recommended. Infrared heat lamps are recommended for
bakeout. They distribute heat evenly and minimize uneven stress in the
glass. Bell jar guards are made from an expanded light weight metal which
is reinforced at top and bottom. Use of a guard protects the jar from
breakage and provides implosion protection for personnel and equipment.
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Dimensions in inches
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Glass
Bell Jar
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|
Viton®L
Gasket
|
|
Metal
Guard
|
Model
No. |
Bell
Jar Dia. |
Wt. |
Price |
Model
No. |
Wt. |
Price |
Model
No. |
Wt. |
Price |
| PBJ-1012 |
10 x 12
|
12.0
|
Please
consult
factory
for
prices. |
BLG-10 |
1.0
|
Please
consult
factory
for
prices.
|
BG-1012 |
4.0
|
Please
consult
factory
for
prices.
|
| PBJ-1212 |
12 x 12
|
15.0
|
BLG-12 |
1.0
|
BG-1212 |
5.0
|
| PBJ-1218 |
12 x 18
|
25.0
|
BLG-12 |
1.0
|
BG-1218 |
7.0
|
| PBJ-1818 |
18 x 18
|
40.0
|
BLG-18 |
1.5
|
BG-1818 |
8.0
|
| PBJ-1830 |
18 x 30
|
50.0
|
BLG-18 |
1.5
|
BG-1830 |
10.0
|
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Option: Bell Jar Strap
Whenever bell jars and metal guards are assembled, we recommend a gasket
or "strap" of Buna rubber be installed on the outside of the bell jar,
between the bell jar and the metal guard. The strap is a cushion between
the bell jar and the metal guard.
The strap is 1/8” thick x 1” wide, installed midway between
the bottom and the top of the bell jar and a clamping ring (which is supplied
with the bell jar guard) is installed on the outside diameter of the guard,
creating a clamp ring/guard/strap/bell jar “sandwich”.
| Dimensions
in inches |
Model
No. |
Bell
Jar Dia. |
Price |
| BR-10 |
10”
|
Please
consult
factory
for
prices. |
| BR-12 |
12”
|
| BR-18 |
18”
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