1:1 cable connection box junction box flexibility transparent two-component self-healing silicone gel. 721 is a transparent two-component self-healing silicone gel that cures to form a cushioned, self-healing extra-soft material. It is designed to insulate circuit boards from moisture and other harmful contaminants and to provide insulation against high voltages. Another use is to provide stress relief to protect circuits and interconnectors from high temperature and mechanical stress. 1:1 additive molding, strong adhesion, self-healing Excellent flexibility, eliminate mechanical stress Very low oil permeability after curing, excellent resistance to toxicity. High temperature electrical insulation is excellent, to provide protection against high pressure Excellent aging resistance and weather resistance. Excellent waterproof, anticorrosive, moisture-proof, chemical medium resistance It is suitable for cable connection box, waterproof junction box and underwater instrument. Widely used in power electronics, ignition module, IGBT potting.