Corrosion Block - 12oz Aerosol Can - Non-Hazmat, Non-Flammable, Non-Toxic - 20012Corrosion Block 12oz Aerosol Can Non Hazmat, Non Flammable, Non Toxic 20012 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 water which is then allowed to evaporate. Corrosion Block's hydrophobic film remains to further protect the metal acting like an "OFF SWITCH" for corrosion. Unlike waxy products