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Like most of the other glassware in our catalog, these parts are made from Schott Duran® glass or its equivalent. These joints are available in sizes from 5/12 to 40/35.
The matching inner joint is also available as are the corresponding joints in a longer length. For a discussion of standard taper joint sizing, see the Joints entry in the Glassware Gallery.
Note: The term "medium length" does not refer to the overall length of this component. It refers to the length of the ground glass portion only. For example, size 14 standard taper joints come in 10, 20, and 35 mm lengths, so a 14/20 joint is "medium" in this context.
In the product selection menu, OD refers the outer diameter of the glass tube, and W refers to the thickness of the glass tube wall.