De or het glazuursel?

The correct Dutch article is:

het glazuursel

Rule Words ending in -sel: usually het. See the rule

How to use glazuursel

the glazuurselhet glazuursel
this glazuurseldit glazuursel
that glazuurseldat glazuursel
our glazuurselons glazuursel
your glazuurseljouw glazuursel
every glazuurselelk glazuursel
which glazuursel?welk glazuursel?
a big glazuursel / the big glazuurseleen groot glazuursel, het grote glazuursel