HS Code for Mechanical seal

Mechanical seals are classified under HS code 8484.20. Unlike simple gaskets or joints made of a single material, mechanical seals are complex assemblies designed to prevent leakage between a rotating shaft and a stationary housing. Heading 8484 covers gaskets and similar joints of metal sheeting combined with other material or of two or more layers of metal. However, subheading 8484.20 is a specific provision for mechanical seals. These components usually consist of a stationary element, a rotating element, and a spring or bellows mechanism to maintain contact between the seal faces. The classification is based on the function and the mechanical nature of the assembly. It is important to distinguish these from simple oil seals or O-rings, which are classified based on their constituent material. Mechanical seals are essential in centrifugal pumps, compressors, and agitators. The inclusion of this specific subheading in the HS nomenclature recognizes the technical complexity of these seals compared to standard sealing washers or gaskets. They are considered mechanical components of machinery rather than simple material-based seals.

Products Included

• Cartridge mechanical seals
• Bellows mechanical seals
• Pusher-type mechanical seals
• Component seals for pumps
• Split mechanical seals

Common Misclassification

Mechanical seals are often misclassified under 4016.93, which is for rubber gaskets, washers, and other seals. However, if the seal is a mechanical assembly with moving parts or springs, 8484.20 takes precedence. They are also sometimes confused with 8484.10, which is for gaskets made of metal sheeting combined with other materials. Simple O-rings made of plastics should be classified in 3926.90, not here.

FAQ

What is the HS code for mechanical seal?

The HS code for a mechanical seal assembly is 8484.20.

Are O-rings classified as mechanical seals?

No, O-rings are generally classified by their material. Rubber O-rings fall under 4016.93, while plastic O-rings fall under 3926.90. Mechanical seals are complex assemblies, not simple rings.