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.
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 not smoke-dried but air-dried
Air-dried natural rubber sheets (unsmoked) fall under latex in primary forms, distinct from smoked sheets.
If processed into waste or parings from manufacturing
Rubber waste, parings, or scrap not usable as-is shifts to heading 4004, excluding primary forms.
If cut to non-rectangular shapes or further worked
Plates/sheets lose primary form status under note 7 if cut to shape or surface-worked beyond simple rectangular cuts.
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Import Tips & Compliance
• Verify supplier certifications for RSS grade (e.g
• RSS1 minimum 93% DRC, clean sheets) to meet quality standards and avoid reclassification
• Ensure documentation confirms no vulcanizing agents, pigments, or extenders added beyond note 5(b) allowances to remain in primary form
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 (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.
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.