Spot-Mask is a rubber-like material to protect the connectors on PCBs in the reflow process against tinning. After the soldering process, spot-mask can be removed easily and without leaving any residues. Mechanical stop after approx. 6 min, hardened after about 2-3 hours at 20°C, 1 hour at 95°C. Can be stored for 12 months. Suitable for lead-free soldering applications.