Technically specified natural rubber (TSNR)
Natural rubber, balata, gutta-percha, guayule, chicle and similar natural gums, in primary forms or in plates, sheets or strip: > Natural rubber in other forms: > Technically specified natural rubber (TSNR)
Duty Rate (from China)
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Subheadings
Products classified 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.
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.
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.
UTSR 5 Upper Thailand Specified Rubber
UTSR 5 is a premium crumb TSNR grade with very low impurities, compressed into bales for precision molding compounds. Specified for optical clarity in technical rubber parts. HTS 4001.22.00 covers primary crumb/bale TSNR.
SIR 3L Standard Indonesian Rubber Light
SIR 3L 'Light' grade TSNR has low plasticity number for easy processing in soft compounds like erasers and cements. Baled primary form per TSNR specs. HTS 4001.22.00.
RSS 5 Ribbed Smoked Sheets Grade 5
RSS 5 TSNR for economy applications with higher dirt tolerance (0.50%). Standard sheet form for general compounding. HTS 4001.22.00 primary sheets.
TSR 20 Granulated Natural Rubber
TSR 20 granulated TSNR compressed into bales for conveyor belting. Medium specs for industrial use. HTS 4001.22.00.
HV Rubber High Viscosity TSR
High viscosity TSNR bales for tire treads requiring strength. Controlled via low-temperature coagulation. HTS 4001.22.00.
Pale Crepe TSNR Grade
Technically specified pale crepe sheets, low color for medical uses. Primary sheet form. HTS 4001.22.00.
Brown Crepe TSNR
Brown crepe TSNR sheets from low-grade coagulum, technically specified. HTS 4001.22.00.
ESTR 20 Easy Standard Thai Rubber
ESTR 20 enzyme-treated TSNR for processing ease. Bales. HTS 4001.22.00.