Ulano Emulsion Hardener XHardener X is a post exposure and processing, liquid screen stencil hardener which improves the stencil durability of textile direct emulsions, including 925WR, TZ, LX 630, LX 660 AND QTX. For industrial use only. You should not expect to reclaim your mesh after applying a hardener. Hardeners penetrate the stencil and form an additional chemical bond with the mesh that stencil removers cannot break. Ulano hardeners can be used with other textile