A dead soft aluminium foil combined with a special transparent synthetic acrylic adhesive makes this the best general purpose foil product available.
No's. 425 has U.L. approval Class "L" for low flammability. Can be used indoors or out for long term applications. Reflective backing provides excellent radiation for both heat and light. The very low moisture vapour transmission rate makes No. 425 a good sealant. The special permanent adhesive combined with the rugged, durable backing gives ideal properties for long service life both indoors and out. Good as a maskant in electroplating of aluminium, since it will not contaminate the bath. Easily die-cut into a special size or shape (suggest use of No. 427 linered). Performance range from -55°C to 150°C continuously. Higher temperatures for shorter periods.
