Packers also come in various types. Suppliers will market benefits of steel, brass, zinc, or aluminum. All things considered, Permanent Set Packers tend to be the most versatile packers as they are compatible with all chemical grout types, while the brass, aluminum, and zinc can exhibit signs of deterioration when using oxidizing agents such as the salt component in a polyacryate gel. However, some contractors insist that the breakdown is not as quick as marketed by suppliers, therefore utilizing brass and aluminum packers in these applications as well.https://www.rlpacker.com/downh....ole-tools/permanent-