HS Code | Official Doc | Tariff Rate | Origin | Destination | Effective Date |
---|---|---|---|---|---|
4016931010 | Doc | 57.5% | CN | US | 2025-05-12 |
4016935010 | Doc | 57.5% | CN | US | 2025-05-12 |
4008210000 | Doc | 55.0% | CN | US | 2025-05-12 |
4008294000 | Doc | 57.9% | CN | US | 2025-05-12 |
8484900000 | Doc | 57.5% | CN | US | 2025-05-12 |
3926904510 | Doc | 58.5% | CN | US | 2025-05-12 |
3926909910 | Doc | 42.8% | CN | US | 2025-05-12 |
3908907000 | Doc | 61.5% | CN | US | 2025-05-12 |
Nylon Gasket
A nylon gasket is a sealing component commonly used to prevent leaks between mating surfaces. It is constructed from nylon material, offering a combination of properties suitable for a wide range of applications.
Material:
- Nylon (Polyamide): Typically made from Nylon 6 or Nylon 6,6. These polymers provide good strength, toughness, and resistance to abrasion, chemicals, and temperature. Specific nylon formulations can be modified to enhance properties like higher temperature resistance or improved impact strength.
Purpose:
- Sealing: Primarily used to create a leak-proof barrier between two surfaces, preventing the escape of fluids or gases.
- Vibration Dampening: Nylon’s inherent flexibility contributes to vibration and noise reduction.
- Electrical Insulation: Nylon is an excellent electrical insulator, making it suitable for applications where electrical isolation is required.
Function:
- Conformability: Nylon gaskets can conform to irregular surfaces, ensuring a tight seal even with minor imperfections.
- Wear Resistance: Provides a degree of wear resistance, extending the lifespan of the joint.
- Low Friction: Offers a low coefficient of friction, reducing galling and wear on mating surfaces.
Usage Scenarios:
- Automotive: Used in fuel systems, oil pans, valve covers, and other engine components.
- Plumbing: Suitable for sealing connections in water pipes, faucets, and drainage systems.
- Electrical Equipment: Used in enclosures, connectors, and other components requiring electrical insulation and sealing.
- Industrial Machinery: Employed in pumps, compressors, and other equipment where resistance to chemicals and abrasion is needed.
- Household Appliances: Found in washing machines, dishwashers, and other appliances.
Common Types:
- Flat Gaskets: Simplest form, cut to specific dimensions.
- O-Rings: Circular gaskets used in grooves to provide a seal. Nylon O-rings are common in low-pressure applications.
- Washers: Used under bolts and screws to distribute load and provide a seal.
- Custom Molded Gaskets: Designed for specific applications with complex shapes and features.
- Split Gaskets: Designed for easy installation and removal in applications where continuous sealing is required.
Properties (Typical Values):
- Tensile Strength: 60-80 MPa
- Hardness: 80-95 Shore D
- Temperature Resistance: -40°C to 120°C (depending on nylon grade)
- Chemical Resistance: Good resistance to many oils, fuels, and solvents, but can be affected by strong acids and bases.
- Coefficient of Friction: 0.15-0.30 (dry)
The declared goods are black nylon gaskets, which are seals typically used to prevent leakage between mating surfaces. They are constructed from nylon, a polyamide material, and function as a barrier in various applications requiring fluid or gas containment.
The following HS codes are relevant based on the provided reference material:
- 3908907000: Polyamides in primary forms: Other: Other. This code covers nylon in its raw, primary form. If the gasket is being imported as a raw material or in a semi-processed state, this code may be applicable. The total tax rate is 61.5%, comprised of a 6.5% base tariff and a 25.0% or 30.0% additional tariff (depending on the date of import).
- 3926904510: Other articles of plastics and articles of other materials of headings 3901 to 3914: Other: Gaskets, washers and other seals O-Rings. This code specifically covers gaskets, washers, and seals made from plastics, including nylon. The total tax rate is 58.5%, consisting of a 3.5% base tariff and a 25.0% or 30.0% additional tariff (depending on the date of import).
- 4016931010: 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. While this code refers to vulcanized rubber, it's included as nylon can sometimes be used in rubber compounds or as a substitute in certain sealing applications. The total tax rate is 57.5%, comprised of a 2.5% base tariff and a 25.0% or 30.0% additional tariff (depending on the date of import).
- 4016935010: Other articles of vulcanized rubber other than hard rubber: Other: Gaskets, washers and other seals: Other O-Rings. Similar to the previous code, this covers vulcanized rubber gaskets and seals, and may be relevant if the nylon gasket is used in conjunction with rubber components. The total tax rate is 57.5%, comprised of a 2.5% base tariff and a 25.0% or 30.0% additional tariff (depending on the date of import).
It is important to note that the additional tariff rate will be 25.0% before April 2, 2025, and will increase to 30.0% on or after April 2, 2025.