Stopcocks, valve and keys - Standard joint, socket - SJ extended

Ground glass joints are used in laboratories to quickly and easily fit leak-tight apparatus together from interchangeable commonly available parts.

One of the glassware items to be joined would have an inner (or male) joint with the ground glass surface facing outward and the other would have an outer (or female) joint of a correspondingly fitting taper with the ground glass surface facing inward. 

We offer many sizes and shapes.

For production we use Simax borosilicate glass tubes. We allways check glass quality, dimensions and optical clarity.