If you are looking for a Vacuum Bell Jar or a Glass Cylinder which suits an Edwards 306 coater, or an ‘L’ gasket, we have a great range of Vacuum Bell Jars cylinders and Gaskets to fit all sorts of vacuum equipment.

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Take a look at the table below for the required size and then use the contact page to get in touch. 

The Gaskets come in Nitrile, Silicone and Viton. 

All Bell Jars and Cylinders are manufactured from borosilicate glass and fully annealed after manufacture to be suitable for vacuum applications.

We have included in the table a column for the available sizes that we have in stock for immediate delivery. 

Below is a list of sizes that we commonly stock, other sizes are available on request. 

Dimension Chart

Jar Dimensions do not have to be exact as gaskets are flexible and will adapt to slightly smaller or larger dimensions. 

Stock Sizes For Bell Jar Gaskets
Size Chart

Size Jar ODGasket IDDim ADim BT1 DimT2 DimStock Material
4
 4" (101mm) 3.750" (95mm)
 0.500" (12.7mm)
 0.375" (9.5mm)
 0.075" (1.9mm)
0.075" (1.9mm)Viton,Nitrile
5 5" (127mm) 4.750" (120mm)0.500" (12.7mm)0.375" (9.5mm) 0.103" (2.6mm)0.075" (1.9mm)Viton,Nitrile
6
 6"(152mm)
 5.75" (146mm)
0.500" (12.7mm)
0.375" (9.5mm)
 0.103" (2.6mm)
0.075" (1.9mm)Viton,Nitrile
8
 8.25"(209mm)
 7.750" (196mm)
0.500" (12.7mm)
0.375" (9.5mm)
0.103" (2.6mm)
0.075" (1.9mm)Viton,Nitrile,Silicone
10 10.25"(260mm) 9.25" (234mm) 0.750" (19mm)0.5" (12.7mm) 0.125" (3.2mm) 0.094" (2.4mm)Viton,Nitrile,Silicone
12 12.5"(317mm) 11.5" (292mm) 0.075" (19mm) 0.5" (12.7mm)0.125" (3.2mm)0.094" (2.4mm)Viton,Nitrile
14 14.25"(362mm) 13.125" (333mm) 1.000" (25.4mm)0.500" (12.7mm)0.125" (3.2mm)0.094" (2.4mm)Viton,Nitrile
15
 15.375"(390mm)
 14.500" (368mm)
 1.000" (25.4mm)
0.500" (12.7mm)
0.125" (3.2mm)
0.094" (2.4mm)Nitrile
18
 18"(457mm)
 17.250" (438mm)
 1.125" (28.6mm)
 0.625" (15.9mm)
0.125" (3.2mm)
0.094" (2.4mm)Viton,Nitrile

Available in Silicone, Viton, and Nitrile.