HS Code for Ethylene-propylene-diene rubber

Ethylene-propylene-diene rubber, commonly known as EPDM, is classified under HS code 4002.70. This classification is determined by the material's chemical composition and its state as a synthetic rubber. According to Note 4 to Chapter 40 of the Harmonized System, synthetic rubber applies to unsaturated synthetic substances which can be irreversibly transformed by vulcanization with sulphur into non-thermoplastic substances. EPDM is a terpolymer of ethylene, propylene, and a non-conjugated diene, which allows for vulcanization via the residual unsaturation in the side chains. The classification 4002.70 specifically covers this rubber when it is in primary forms, such as blocks, crumbs, or granules, or in plates, sheets, and strips. The determination depends on the product not being compounded with fillers, plasticizers, or other substances that would move it to heading 40.05. The durability, heat resistance, and weathering properties of EPDM make it a distinct category within the synthetic rubber family, necessitating its own specific subheading under the 4002 group.

Products Included

• Unvulcanized EPDM granules for industrial manufacturing
• EPDM rubber slabs in primary forms
• Non-compounded EPDM sheets for further processing
• Ethylene-propylene-diene monomer liquid polymers
• EPDM masterbatches without carbon black or silica

Common Misclassification

EPDM is frequently misclassified under HS code 4005.10 or 4005.91. These codes refer to compounded rubber, which is rubber that has been mixed with carbon black, silica, or other reinforcing agents. If the EPDM has already been mixed with these additives, it must be moved from 4002 to 4005. Additionally, finished EPDM products like gaskets or seals are classified under 4016.93, not the raw material code 4002.70. Importers often confuse these based on the material name rather than the stage of processing.

FAQ

What is the HS code for Ethylene-propylene-diene rubber?

The HS code for EPDM in its primary, uncompounded form is 4002.70.

Does 4002.70 include EPDM roofing membranes?

No, finished roofing membranes are typically classified under 4016 or 3921 depending on their construction and reinforcement, as 4002.70 is reserved for raw or semi-finished primary forms.