RSS 1 Ribbed Smoked Sheets Natural Rubber
RSS 1 is the highest grade of Ribbed Smoked Sheets (TSNR), made by coagulating, rolling, and smoke-drying natural latex into thin sheets with very low dirt (<0.02%) and high initial plasticity. These sheets are technically specified for consistent quality and packed in 100kg bundles. Falls under HTS 4001.22.00 as TSNR in sheet form, retaining essential character as primary natural rubber.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | +25.0% | 25% |
| 🇲🇽Mexico | Free | — | Free |
| 🇨🇦Canada | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
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 classified as smoked sheets but not meeting full TSNR technical specs
Smoked sheets without IRSG technical specifications fall under 4001.21; TSNR requires standardized purity and property tests.
If cut into profiles, rods, or non-rectangular shapes exceeding simple sheet form
Chapter notes limit 4001 sheets to uncut rectangular blocks; further shaping moves to plates/sheets/strip of 4008.
If for lower-grade, technically specified crumbs or granules
TSNR in crumb/granule primary forms (not sheets/bales) is classified under 4005, differentiated by physical form per chapter notes.
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Import Tips & Compliance
• Obtain visual inspection certificates confirming RSS 1 cleanliness standards; even minor discoloration can downgrade classification
• Declare exact sheet thickness and smoking process details; ensure no surface-working beyond simple cutting to rectangular shapes
• Check for proper PE wrapping to prevent contamination during shipping, as exposed sheets risk reclassification as scrap
Related Products under HTS 4001.22.00
SIR 20 Technically Specified Natural Rubber
SIR 20 is a standard grade of Technically Specified Natural Rubber (TSNR) produced from coagulated natural latex, meeting the specifications of the International Rubber Study Group for dirt content, ash, and nitrogen levels. It is supplied in 35kg rectangular bales wrapped in thin polyethylene film. Classified under HTS 4001.22.00 as TSNR in primary bale form, not compounded with vulcanizing agents or fillers beyond permitted additives.
TSR 10 Technically Specified Rubber Bale
TSR 10 grade TSNR consists of air-dried natural rubber sheets granulated and compressed into uniform 35kg bales, specified for moderate dirt (0.20%) and ash (0.75%) levels suitable for automotive parts. It maintains primary form without prohibited compounding. HTS 4001.22.00 covers this standard TSNR product used globally in rubber compounding.
SIR 50 Standard Indonesian Rubber
SIR 50 is a lower-grade TSNR from Indonesian plantations, coagulated into loose crumbs compressed into bales with higher ash (1.5%) tolerance for cost-sensitive applications like mats and footwear soles. It qualifies as technically specified under international standards. Classified in HTS 4001.22.00 for primary crumb/bale forms.
RSS 3 Ribbed Smoked Sheet Rubber
RSS 3 TSNR grade features slightly higher dirt content (0.20%) than RSS 1 but remains technically specified for general tire carcasses and conveyor belts. Produced via traditional ribbing and smoking of natural latex sheets. HTS 4001.22.00 applies to these primary sheet forms without prohibited additives.
TSR CV60 Constant Viscosity Rubber
TSR CV60 is technically specified natural rubber with controlled viscosity (Mooney 60±5) achieved through enzyme treatment of coagulum, baled for consistent processing in extrusion applications. Meets TSNR standards for industrial rubber goods. HTS 4001.22.00 for this primary treated bale form.
STD 20 Standard Thai Rubber Bale
STD 20 TSNR from Thailand features standard bale compression of field coagulum with 0.15% dirt max, ideal for heavy-duty tires and belts. Technically specified per regional standards equivalent to SIR 20. Classified under HTS 4001.22.00 as primary natural rubber bales.