Find HS Code and trade information for black + red gasket

Gasket

A gasket is a mechanical seal designed to maintain a seal between two surfaces, typically to prevent leakage of fluids or gases. They are commonly used in engines, flanges, and various other machinery and equipment. The combination of "black + red gasket" suggests a gasket constructed from two different materials, likely to leverage the properties of each.

Material

Gaskets are manufactured from a wide variety of materials, each suited to specific applications. The combination of black and red suggests the following possibilities:

• Black: Commonly represents materials like:
  • Neoprene (Polychloroprene): A synthetic rubber offering good resistance to oils, fuels, and weathering. Often used in automotive applications and general sealing.
  • Nitrile Rubber (Buna-N): Excellent resistance to oils, greases, and many chemicals. A very common gasket material.
  • EPDM Rubber: Good resistance to heat, ozone, and weathering. Frequently used in outdoor applications and automotive coolant systems.
  • SBR Rubber: A general-purpose synthetic rubber, less expensive than other options, but with limited resistance to oils and chemicals.
• Red: Commonly represents materials like:
  • Silicone Rubber: Excellent resistance to high and low temperatures, weathering, and ozone. Often used in food-grade applications and high-temperature seals.
  • Viton (Fluoroelastomer): Superior resistance to chemicals, oils, and high temperatures. Used in demanding applications like aerospace and chemical processing.
  • Cork: A natural material offering good compression set and resistance to fluids. Often used in lower-pressure applications.

A black/red gasket could be a composite, with one material forming the bulk of the gasket and the other used as a coating, facing layer, or O-ring for enhanced performance.

Purpose

The primary purpose of a gasket is to create a static seal. This seal prevents:

• Fluid Leakage: Preventing the loss of liquids or gases from a system.
• Gas Leakage: Maintaining pressure in systems and preventing escape of hazardous gases.
• Contamination: Preventing the ingress of dirt, dust, and other contaminants into a system.
• Vibration Dampening: Some gaskets can help reduce vibration and noise.

Function

Gaskets function by:

• Conforming to Surface Imperfections: Gaskets are compressible and can fill in microscopic irregularities on mating surfaces.
• Creating a Tight Seal: When compressed between two surfaces, the gasket material deforms and creates a barrier to flow.
• Maintaining Seal Under Pressure and Temperature Changes: The gasket material must be able to withstand the operating conditions of the application without degrading or losing its sealing properties.

Usage Scenarios

Gaskets are used in a vast array of applications, including:

• Automotive Engines: Cylinder head gaskets, oil pan gaskets, valve cover gaskets, exhaust manifold gaskets.
• Plumbing: Faucet gaskets, pipe flange gaskets, toilet gaskets.
• HVAC Systems: Ductwork gaskets, compressor gaskets, refrigerant line gaskets.
• Industrial Machinery: Pump gaskets, valve gaskets, compressor gaskets.
• Electronics: Sealing enclosures to protect sensitive components.

Common Types

• Sheet Gaskets: Cut from flat sheets of gasket material. Versatile and can be cut to any shape.
• O-Rings: Circular gaskets used in grooves to create a seal.
• Die-Cut Gaskets: Precisely cut gaskets for specific applications.
• Spiral Wound Gaskets: Constructed from alternating layers of metal and filler material. Used in high-pressure, high-temperature applications.
• Composite Gaskets: Combining multiple materials for enhanced performance. The "black + red gasket" falls into this category.
• Cork Gaskets: Used in low-pressure applications where fluid resistance is not critical.

The declared goods are gaskets, specifically those colored black and red. These gaskets are likely used for sealing purposes in various applications, potentially including automotive goods. The material composition is a key factor in determining the correct HS code.

Here are the relevant HS codes based on the provided reference material:

• 4016931010: This HS code covers “Other articles of vulcanized rubber other than hard rubber: Other: Gaskets, washers and other seals: Of a kind used in the automotive goods of chapter 87 O-Rings”. This is applicable if the gasket is made of vulcanized rubber and intended for use in automotive applications. The total tax rate is 57.5%, comprising a 2.5% base tariff, a 25.0% additional tariff, and a 30.0% additional tariff effective April 2, 2025.
• 4016931050: This HS code covers “Other articles of vulcanized rubber other than hard rubber: Other: Gaskets, washers and other seals: Of a kind used in the automotive goods of chapter 87 Other”. This is applicable if the gasket is made of vulcanized rubber and intended for use in automotive applications, but is not specifically an O-Ring. The total tax rate is 57.5%, comprising a 2.5% base tariff, a 25.0% additional tariff, and a 30.0% additional tariff effective April 2, 2025.
• 3926904510: This HS code covers “Other articles of plastics and articles of other materials of headings 3901 to 3914: Other: Gaskets, washers and other seals O-Rings”. This is applicable if the gasket is made of plastic. The total tax rate is 58.5%, comprising a 3.5% base tariff, a 25.0% additional tariff, and a 30.0% additional tariff effective April 2, 2025.

Important Considerations:

The material composition of the gasket is crucial for accurate classification. If the gasket is made of vulcanized rubber, HS codes 4016931010 or 4016931050 are applicable, depending on its intended use (automotive vs. other). If the gasket is made of plastic, HS code 3926904510 is applicable.