Profile: Dip Seal Plastics, Inc. offers a variety of protective coatings. Our dip seal coatings will protect the product from corrosion, shipping damage, scratching and moisture penetration. We offer a full line of melting tanks in a variety of sizes, including round and rectangular. Our melting tanks provide thermostatically controlled heat, powder coated steel castings, aluminum, steel, or stainless crucibles for all melting needs.