Where the rubber compound content is less than 25% by weight
Endless synchronous belts, 150–198 cm circumference, low rubber content
HSN 4010 36 10 (endless synchronous belts of an outside circumference exceeding 150 cm but not exceeding 198 cm, where rubber compound content is less than 25% by weight) is not covered by a Bureau of Indian Standards Quality Control Order and carries no Partner Government Agency clearance requirement at the tariff-line level. Import follows the standard customs procedure: Importer-Exporter Code, bill of entry, commercial invoice, packing list. Other vulcanised rubber belts and belting under Chapter 40 — particularly those with higher rubber compound content or different dimensional specifications — may be classified under sibling tariff lines that carry distinct compliance obligations.
The principal importer risk at this tariff line is misclassification: the threshold of 25% rubber compound content by weight is a hard boundary, and customs examination of product composition can trigger re-classification to a higher-rubber-content sibling line within Chapter 40. Re-classification retrospectively imposes any compliance obligation applicable to that line, including potential detention pending verification. Importers should retain laboratory test certificates confirming compound composition and dimensional specifications before the goods arrive at port.