DIN 18, DIN 20 and DIN 22 caps fit a large share of glass and plastic bottles: essential oils, serums, cosmetics, chemicals. We produce them by injection moulding, standard or custom.
DIN 18, 20, 22: what is the difference?
The number is the bottle neck diameter in millimetres. DIN 18 mostly fits small bottles such as essential oils; DIN 20 and DIN 22 fit larger ones.
The thread is what matters
A threaded cap must screw on smoothly, stay tight and seal. It all depends on mould design, demoulding that does not damage the threads, and a material that does not warp while cooling.
Materials and options
- PP, the most common cap material, or PE depending on the content;
- any colour, coloured through;
- logo or pictograms moulded on top;
- child-resistant version, sealing liner, dropper insert on request.
See our DIN 20 child-resistant closure.
Have a file or a sample? Send it here.