Ribbed Smoked Sheets (RSS4)
Lower-grade RSS4 smoked sheets with higher ash content (max 1.0%) and visible bark specks, used in lower-end rubber products. Classified in HTS 4001.21.00 as it meets 'smoked sheets' definition without prohibited additives.
Import Duty Rates by Country of Origin
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If pale crepe variant, air-dried
Air-dried crepe sheets are latex forms, not smoked.
If compounded with vulcanizing agents
Note 5(a) excludes compounded rubber from primary headings.
If made into new pneumatic tires
Finished tires are articles of heading 4011, not raw sheets.
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Import Tips & Compliance
• Test for copper/heavy metals pre-shipment; RSS4 tolerances higher but still regulated
• Document smoke-drying process to distinguish from chemically coagulated alternatives
Related Products under HTS 4001.21.00
Sumatra Smoked Rubber Sheets
Indonesian Sumatra-origin smoked sheets known for earthy aroma, ribbed and dried traditionally. Classed in HTS 4001.21.00 as natural rubber smoked sheets.
Vietnamese Smoked Rubber Sheets
High-volume Vietnamese RSS-grade smoked sheets meeting international standards for export. HTS 4001.21.00 primary smoked natural rubber.
Sri Lankan Smoked Rubber Sheets
Sri Lankan ribbed smoked sheets with consistent quality for automotive use. Fits HTS 4001.21.00 as uncompounded primary form.
Ribbed Smoked Sheets (RSS1)
High-quality natural rubber smoked sheets graded as RSS1, produced by coagulating latex from Hevea brasiliensis, rolling into ribbed sheets, and smoke-drying over wood fires. Classified under HTS 4001.21.00 as smoked sheets in primary form, retaining essential character as raw material without vulcanizing agents or fillers beyond permitted additives.
Ribbed Smoked Sheets (RSS2)
Standard-grade RSS2 smoked sheets of natural rubber, lightly stained but technically clean, with dirt content under 0.20%. Made via traditional coagulation and smoking process, qualifying as 'smoked sheets' in HTS 4001.21.00 for primary natural rubber forms.
Ribbed Smoked Sheets (RSS3)
RSS3 grade smoked natural rubber sheets with moderate staining and slightly higher dirt (max 0.55%), still suitable for tire and footwear compounding. Falls under HTS 4001.21.00 as primary smoked sheets per chapter notes excluding compounded mixtures.