Unvulcanized EPDM Rubber Sheets
Flat sheets of compounded EPDM (ethylene propylene diene monomer) rubber, unvulcanized, supplied in primary form for further processing into weatherstripping and roofing membranes. This product falls under HTS 4005.91.00.00 as it is compounded rubber in sheet form, not yet vulcanized, distinguishing it from vulcanized sheets in heading 4008.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If vulcanized after compounding
Vulcanized rubber plates, sheets, and strip shift to heading 4008 as they no longer qualify as unvulcanized primary forms.
If supplied in liquid or paste dispersion rather than sheets
Synthetic rubber in dispersions or solutions falls under heading 4002, not sheet forms in 4005.
If considered waste or scrap from compounding process
Rubber waste, parings, or scrap from manufacture are classified in heading 4004, not usable sheets.
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Import Tips & Compliance
• Verify compounding does not include vulcanizing agents or fillers beyond permitted levels to avoid reclassification to heading 4004 or 4009
• Provide mill test reports confirming unvulcanized state and primary form to CBP for smooth clearance
• Label sheets clearly with material composition to prevent misclassification as finished articles
Related Products under HTS 4005.91.00.00
Unvulcanized Nitrile Rubber Plates
Rectangular plates of nitrile butadiene rubber (NBR) compound, unvulcanized, used in gasket production for oil-resistant applications. Classified under HTS 4005.91.00.00 for compounded unvulcanized rubber in plate form, excluding vulcanized or further worked products.
Unvulcanized SBR Rubber Strips
Narrow strips of styrene-butadiene rubber (SBR) compound, unvulcanized, in rectangular shape for tire manufacturing or conveyor belting base. HTS 4005.91.00.00 covers such unvulcanized compounded rubber strips, simply cut to rectangular shape without further working.
Unvulcanized Silicone Rubber Sheets
High-temperature resistant unvulcanized silicone rubber sheets for molding into seals and gaskets. This compounded product is classified in HTS 4005.91.00.00 as unvulcanized rubber in sheet form, prior to vulcanization.
Unvulcanized Butyl Rubber Plates
Plates of unvulcanized butyl rubber compound for inner tube linings and roofing. Falls under HTS 4005.91.00.00 for unvulcanized compounded rubber plates in primary forms.
Unvulcanized Neoprene Rubber Strips
CR (chloroprene) rubber strips, unvulcanized, for wetsuit and hose production. HTS 4005.91.00.00 applies to these rectangular compounded strips.
Unvulcanized Natural Rubber Sheets
Compounded natural rubber sheets, unvulcanized, for balloon and glove molding. Classified in 4005.91.00.00 as primary form sheets.