Stoppers

Hollow stoppers with a closed bottom, ground for use in outer joints. ..

The 38 size is hollow.  All other sizes are solid, ground for use with flask length outer jo..

Spherical ball joint stoppers ground for use in socket joints.  ..

Solid stoppers designed to be inverted and placed on end preventing spilling on table surfaces. ..

Inner joint with cylindrical top and open bottom.  Ground for use in outer joints. ..

Inner joint with cylindrical top, open bottom and an inner suspension hook.  Ground for use ..

Outer joint with cylindrical top and side hooks for the attachment of springs.  Ground for u..

Socket joints.  Ground for use with ball joints. ..

Hollow stoppers made entirely of teflon.  Ground for use in outer joints. ..

Solid stoppers made entirely of teflon.  Ground for use in flask length outer joints. ..