Technically Specified Natural Rubber Grade L (TSNR L)
Technically Specified Natural Rubber (TSNR) Grade L is a standardized form of natural rubber from Hevea brasiliensis latex, processed into bales for industrial use. It meets specific technical specifications for viscosity, dirt content, and ash levels as defined in Chapter 40 notes for primary forms. Classified under HTS 4001.22.00.15 due to its status as TSNR Grade L in bale form, excluding any compounding with vulcanizing agents or fillers.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If smoked sheets rather than technically specified
Smoked sheets of natural rubber in primary forms fall under a separate subheading from TSNR grades.
If not technically specified but in other primary forms like latex
Natural rubber not meeting TSNR standards is classified in the general 'other forms' category.
If processed into waste, parings, or scrap from manufacturing
Rubber waste not usable as-is per note 6 moves from primary forms to waste heading.
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Import Tips & Compliance
• Verify supplier certification confirming TSNR L specs (e.g
• Mooney viscosity, dirt content) to avoid reclassification as unstandardized rubber
• Provide lab test reports for primary form compliance; bales must not exceed permitted additives per Chapter 40 note 5
Related Products under HTS 4001.22.00.15
TSNR L Standard Bale for Tire Manufacturing
Grade L TSNR in compressed rectangular bales, technically specified for low dirt and high plasticity in automobile tire compounding. Complies with primary forms definition as blocks or bales without disallowed additives. HTS 4001.22.00.15 specifically for this TSNR grade.
Ribbed Smoked Sheet Equivalent TSNR L Bale
TSNR Grade L bales standardized to mimic properties of ribbed smoked sheets (RSS) but technically specified for consistent quality in tire production. Produced from coagulated latex without prohibited compounding agents, retaining primary form character. Falls under 4001.22.00.15 as TSNR Grade L per hierarchy.
Air-Dried TSNR Grade L Sheets in Bale Form
Technically specified natural rubber Grade L from air-dried latex sheets compressed into bales, used in conveyor belts and hoses. Meets Chapter 40 note 3 for primary bulk forms without vulcanization or fillers. Precisely under 4001.22.00.15 for TSNR L.
Low-Dirt TSNR L Bale for Industrial Compounding
TSNR Grade L with minimized dirt content (<0.02%) in standard 35kg bales for mixing in rubber molds and seals. Primary form per notes, uncut rectangular blocks without surface working beyond printing. HTS classification 4001.22.00.15 for this specific grade.