In Stock Welding and refractory Thermal insulation paste Technoflux AP 120 ml. 00860 €5.44 Technoflux AP Hot/Cold Thermal Insulation Paste is an essential product for any jewelry workshop that works with precision soldering. Its thermal insulation formula is designed to protect areas that should not be heated, such as set stones, sensitive elements, or already soldered parts of the design. Once used, it washes off with water. Add to cart