What is the HSN code for a transformer oil filter machine?

The HSN code for a transformer oil filter machine is 8421. This classification falls under machinery and mechanical appliances for filtering or purifying liquids or gases. Transformer oil filter machines are essential for maintaining the quality of transformer oil, ensuring that impurities are removed to enhance the performance and longevity of power transformers. Proper identification of the HSN code is crucial for compliance and taxation purposes.