One Component Fluid Hygro-Curing Flexible Weather Resistance Electronic PCB Silicone Adhesive. 721LB neutral dealcoholized silicone bonding sealant is a fluid hygro-curing silicone, which forms a flexible rubber body after curing, fully complying with the requirements of the EU ROHS Directive. The release of alcohols during the curing process is non-corrosive to polycarbonate (PC), copper and other materials. has good bonding and sealing performance for most materials, protecting electronic products in a stable state under harsh conditions. Reduces mechanical stress and tension caused by mechanical, thermal shock and vibration Excellent electrical insulation and corona resistance. Excellent outdoor aging, service life of up to 20-30 years Stable mechanical and electrical properties at -60-260 degree. LED lamp seal, plastic metal shell seal; PCB board components, wiring harness fixed Exquisite electronic parts, waterproof coating for electrical and communication equipment. Small modules, photoelectric display and circuit board, under 6mm thin layer potting, plugging.