Tariff classification turns on essential use: a closed rubber sensing element was treated as another vulcanised rubber article, not a tube.

Tariff classification depends on the article's essential use and function, not on the mere presence or movement of liquid inside it. A closed vulcanised rubber sensing element used to detect pressure was not treated as a tube, pipe or hose under Heading 4009.99 because it was not used for conveying liquids or gases. It was held to fall instead under Heading 4016 as another article of vulcanised rubber, applying the principle that classification follows the product's true character and use.

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Issues: Whether the sensing element manufactured by the assessee was classifiable under Heading 4009.99 as tubes, pipes or hoses of vulcanised rubber, or under Heading 4016 as other articles of vulcanised rubber.

Analysis: Heading 4009.99 applies only to tubes, pipes and hoses whose essential function is the conveyance of liquids or gases. The product in question was closed at both ends and was used to sense pressure, with liquid injected into it for that purpose. Mere movement of the liquid inside the product did not make it a tube or pipe used for conveying fluids. The earlier orders did not give persuasive reasoning for treating the product as a tube merely because liquid was introduced into it.

Conclusion: The product was not classifiable under Heading 4009.99 and was rightly classifiable under Heading 4016. The appeal was allowed, in favour of the Revenue.

Ratio Decidendi: For tariff classification, a product is to be placed under the heading that reflects its essential use and function; a closed rubber article used to sense pressure is not a tube or pipe merely because liquid is contained within it.

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