SLIDER The slider joins or separates the elements when the zipper is opened or closed. Various types of sliders are available depending on use. The teeth, also known as elements, are the parts on each side of a zipper that mesh, or engage, with each other when passed through the slider. When the left and the right side teeth are engaged they are called chain. The tape is manufactured exclusively for zippers. It is usually made of polyester, but depending on use, synthetic fiber tape, vinyl tape and cotton tape are also available. Types of Function Closed-end Open-end [Separator] Two-way separator Zipper with double sliders Zipper with double sliders Standard Slider Functions Non-Lock slider (DF) Automatic slider (DA) Semi-automatic slider (DS) Jeans slider (GS) The pull-tab does not lock at any position on the body. No locking mechanism. The lock automatically locks when no force is placed on the tab-pull. When the pull-tab is lowered, it locks. When the pull-tab is raised, it unlocks. Jeans Semi-automatic slider Pin lock slider (DP) Reversible slider (DUA) Plastic slider (TA) Plastic slider (TF) Pin lock slider Reversible slider Plastic slider Pins on the pull-tab work on the elements and lock. The pull moves along a rotating rail. The zipper opens and closes from either the front or back.(Automatic) Locks are made of metal. (Automatic) (Non-Lock) Key lock slider Double pull Can be locked with a key. Opens and closes from either front or back. (Non-Lock, Automatic)