Mechanical Seal HSN Code & GST Rate in India (2026)

Have you ever filled out a form in a hurry?

Everything looks correct. So you submit it and move on.

A few days later, you check it again.

And there it is.

A small mistake you did not notice before.

Maybe a wrong number. Maybe a spelling error.

It seems like a tiny detail.

But fixing that one mistake can take more time than filling out the entire form.

The same thing often happens in business documentation. A small classification error can lead to issues in billing, taxation, and recordkeeping. This is why using the correct mechanical seal HSN code is essential. Whether you are a trader, manufacturer, or buyer, knowing the right classification helps ensure accurate GST compliance and documentation.

In this guide, I'm going to cover the mechanical seal HSN code and GST rate in India (2026), along with other important details you should know.

Mechanical seal HSN code & GST rate at a glance

A small classification mistake can create unnecessary confusion later.

That is why using the correct HSN code and GST rate is necessary when preparing invoices, GST returns, or business documents.

To make things easier, let me share a quick overview of the mechanical seal HSN code and applicable GST rate in India.

As you can see, mechanical seals are commonly classified under HSN Code 84842000 and attract an 18% GST rate in India.

However, many businesses are still unsure about which code to use and why this classification matters.

Let's understand it in more detail.

What is the HSN code for mechanical seals in India?

The HSN code for mechanical seals in India is generally 84842000. This code falls under Chapter 84 of the HSN classification system and is used for identifying mechanical seals for GST and taxation purposes.

Businesses use this code while preparing invoices, filing GST returns, and maintaining tax records. Using the correct HSN code helps ensure accurate product classification and reduces the chances of errors in GST compliance.

HSN Code 84842000 specifically covers mechanical seals. It helps create a standardized classification system for manufacturers, suppliers, importers, and traders dealing with mechanical seals across India.

Mechanical seal HSN Code: 84842000

HSN Code 84842000 falls under Heading 8484, which covers mechanical seals, gaskets, and similar jointing products used to prevent leakage between moving and stationary components.

The code helps classify mechanical seals under a standardized system used for trade, taxation, and product identification. This classification makes it easier for businesses and tax authorities to identify products accurately.

Products commonly covered under this classification include single spring seals, cartridge seals, multispring seals, metal bellow seals, and other types of mechanical seals used in industrial applications.

GST rate applicable on mechanical seals

Mechanical seals generally attract a GST rate of 18% in India. This rate is applicable to most businesses involved in the manufacturing, supply, trading, or purchase of mechanical seals.

For intra-state transactions, the GST is usually divided into 9% CGST and 9% SGST. For inter-state transactions, an 18% IGST is commonly applicable. Businesses should use the correct GST rate while preparing invoices and maintaining tax records to ensure compliance with GST regulations.

Here are the details of the GST rate:

HSN classification breakdown for mechanical seals

The Mechanical Seal HSN Code 84842000 is divided into different classification levels under the HSN system. Each part of the code provides specific information about the product category and its classification. 

Types of mechanical seals covered under HSN code 84842000

Mechanical seals are available in different designs to meet specific operating conditions and industry requirements. Although their construction and applications may vary, many of these products are generally classified under HSN Code 84842000 when used as mechanical sealing solutions.

Below are some common types of mechanical seals covered under this classification.

Pump mechanical seals

Pump mechanical seals are among the most widely used sealing solutions in industrial equipment. They help prevent fluid leakage in centrifugal pumps, water pumps, chemical pumps, and other rotating machinery while improving operational efficiency.

Cartridge mechanical seals

Cartridge mechanical seals come as pre-assembled units, making installation easier and reducing the chances of alignment errors. These seals are commonly used in industries where quick maintenance and reliable performance are important.

Single and double mechanical seals

Single mechanical seals use one set of sealing faces and are suitable for general applications. Double mechanical seals use two sealing interfaces, providing additional protection in systems that handle hazardous, corrosive, or high-value fluids.

Dry running mechanical seals

Dry running mechanical seals are designed to operate with limited or no lubrication between the seal faces. These seals are often used in specialized applications where conventional lubrication is not available.

Multispring mechanical seals

Multispring mechanical seals use multiple springs to provide uniform pressure across the sealing faces. They are commonly used in high-pressure and demanding industrial applications where stable sealing performance is required.

Metal bellow mechanical seals

Metal bellow mechanical seals use flexible metal bellows instead of traditional springs. They are suitable for high-temperature environments and applications involving corrosive fluids.

Pusher mechanical seals

Pusher mechanical seals use a secondary sealing element that moves along the shaft to maintain sealing effectiveness. These seals are commonly found in pumps, compressors, and other rotating equipment.

Balanced mechanical seals

Balanced mechanical seals are designed to reduce the load on the sealing faces. This helps minimize wear, improve durability, and support operation under higher pressure conditions.

Reverse balanced mechanical seals

Reverse balanced mechanical seals are designed for applications that require improved performance under varying pressure conditions. They help enhance seal life and reduce leakage risks in challenging environments

Why using the correct HSN code matters

Using the correct mechanical seal HSN code is important for businesses involved in manufacturing, trading, importing, or supplying mechanical seals. A small classification error can lead to issues in invoicing, GST filing, and tax reporting.

The right HSN code helps maintain consistency in business records and ensures that products are classified correctly under the GST system. It also makes it easier for businesses to manage compliance and avoid unnecessary confusion during audits or documentation processes.

Accurate GST compliance

Using the correct HSN code helps businesses apply the appropriate GST rate and maintain accurate tax records.

Error free invoicing

A properly classified product reduces the chances of mistakes in invoices, purchase orders, and other business documents.

Better record management

Standardized product classification makes it easier to organize business records and track transactions efficiently.

Smooth trade and documentation

The correct HSN code helps manufacturers, suppliers, importers, and buyers identify products consistently across different business transactions.

Ready to find the right mechanical seal after understanding the mechanical seal HSN code?

Using the correct mechanical seal HSN code is important for proper GST filing, invoicing, and business records. Since most mechanical seals are classified under HSN Code 84842000 and attract an 18% GST rate, knowing these details can help businesses avoid mistakes and keep their documentation accurate.

But choosing the right mechanical seal is also important. Different machines and applications need different types of seals to work properly and prevent leakage.

Unique Seal Engineering Co. is a trusted manufacturer of premium mechanical seals for industries across India.

At Unique Seal, we offer a wide range of mechanical seals for different industrial applications. Whether you need pump seals, cartridge seals, metal bellow seals, or balanced seals, we provide reliable solutions designed to support smooth and efficient operations.

Looking for the right mechanical seal for your business? Get your free quote today and explore the best sealing solution for your application.

Frequently asked questions about mechanical seal HSN code and GST rate

What is the HSN code for mechanical seals in India?

The HSN code for mechanical seals in India is generally 84842000. This code is commonly used for product classification under the GST system and helps businesses maintain accurate invoicing, taxation, and compliance records related to mechanical seal transactions.

Why is the correct HSN code essential for the mechanical seal business?

Using the correct HSN code helps businesses apply the appropriate GST rate and maintain accurate tax documentation. It also reduces the risk of classification errors, invoice discrepancies, and compliance issues that may arise during GST return filing or audits.

What is the difference between a cartridge seal and a component seal?

A cartridge seal is supplied as a pre-assembled unit, making installation easier and reducing alignment errors. A component seal consists of separate parts that require manual assembly and adjustment, which may take more time during installation and maintenance.

Can mechanical seals be customized for specific machinery?

Yes, mechanical seals can be customized to suit different machinery, operating conditions, and industrial applications. Factors such as shaft size, pressure, temperature, fluid type, and equipment design are often considered when selecting or designing a suitable seal.

Can a wrong HSN code affect GST return filing?

Yes, using an incorrect HSN code can create inconsistencies in GST records and tax filings. It may lead to classification errors, invoice mismatches, compliance concerns, and additional verification requirements, making accurate product classification important for businesses.

What is the GST rate applicable on mechanical seals in India?

Mechanical seals generally attract an 18% GST rate in India. For intra-state transactions, GST is usually divided into 9% CGST and 9% SGST, while inter-state transactions commonly attract 18% IGST. Businesses should verify the applicable tax rate before invoicing.

Does HSN Code 84842000 apply to pump mechanical seals?

Yes, pump mechanical seals are generally classified under HSN Code 84842000 when used as mechanical sealing devices. This classification is commonly used for GST compliance, invoicing, product identification, and trade documentation related to mechanical seal products.

Are mechanical seal spare parts covered under the same HSN code?

The HSN classification of mechanical seal spare parts may vary depending on the specific product and its intended use. Businesses should review the product description carefully and consult the latest GST or customs guidelines before finalizing the classification.

Is the HSN code the same for imported and locally supplied mechanical seals?

In most cases, the product classification remains the same regardless of whether the mechanical seal is imported or supplied within India. However, businesses should always verify the applicable customs and GST requirements based on the product specifications and transaction type.