Mastics; n.e.c. in heading no. 3214

HS code 321490 covers a diverse range of mastics, which are adhesive compounds used for sealing, filling, and bonding applications. These materials play a crucial role in various industries, from construction and automotive to aerospace and electronics. As a versatile and essential product, the global mastic market continues to grow, driven by increasing demand for durable and reliable sealing solutions across a wide range of end-use sectors.

Mastics are typically produced through a process of blending and mixing various raw materials, such as resins, solvents, and fillers. The specific production techniques can vary depending on the desired properties and applications of the final product. Common methods include batch mixing, continuous extrusion, and in-situ polymerization. Manufacturers often employ quality control measures to ensure the consistency and performance of the mastic formulations.

The main inputs required for the production of mastics under HS code 321490 include a variety of resins (e.g., 390110 Polyethylene, 390120 Polyisobutylene, 390130 Propylene copolymers), solvents (e.g., 290110 Saturated acyclic hydrocarbons, 290220 Benzene), and fillers (e.g., 250810 Bentonite, 252010 Vermiculite, 252020 Kieselguhr, 252100 Limestone, 283620 Calcium carbonate). Specialized equipment, such as mixing tanks, extruders, and curing ovens, are also essential for the manufacturing process.

Mastics produced under HS code 321490 are primarily used as sealants, adhesives, and fillers in a wide range of applications. They are commonly used in the construction industry for sealing joints, cracks, and gaps in buildings, as well as in the automotive industry for bonding and sealing components. Mastics may also find use in the aerospace, electronics, and industrial machinery sectors. The outputs of this industry are often consumed by manufacturers and contractors in 321510 Paints and varnishes, 701990 Other articles of glass, 732690 Other articles of iron or steel, and 842199 Parts of machinery for filtering or purifying liquids or gases.