Corrosion Block is a clean fluid that actively protects metal using advanced polar bonding chemistry. Synthetic additives in corrosion block completely penetrate corrosion cells replacing the salt and water which are then allowed to evaporate. The corrosion block’s hydrophobic film remains to further protect the metal acting like an “off switch” for corrosion. Corrosion Block is an anti-corrosion compound developed exclusively to stop existing corrosion and prevent new. It is unique in that it is designed for use in electrics and electronics as well as metals and structures. Superior anti-corrosion compound. Prevents new corrosion cells from forming for extended periods of up to 18 months. Are an excellent penetrant and light lubricant. Kills existing corrosion. Excellent Penetrant. Non-Toxic & Environmentally Friendly.