Cartridge Type Mechanical Seal
Pre-assembled cartridge mechanical seal that installs as a single unit onto pump shafts, simplifying maintenance in chemical processing equipment. Classified under HTS 8484.20.00.00 for its mechanical sealing action using multiple sealing elements. Ideal for high-pressure applications requiring easy replacement.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported mounted on centrifugal pumps
Centrifugal pump parts heading takes precedence over general mechanical seals when clearly pump-specific.
If static gasket-style design without dynamic faces
Metal sheeting gaskets apply to non-rotating seals, excluding dynamic mechanical face seals.
If for semiconductor wafer processing machines
Special machines chapter for semiconductor-specific seals used in crystal grinders or wafer polishers.
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Import Tips & Compliance
• Provide assembly drawings showing it's a complete mechanical seal unit, not loose parts, to prevent reclassification
• Ensure FDA compliance if for food/pharma pumps, including material certificates for wetted parts
• Declare shaft size compatibility to distinguish from universal parts
Related Products under HTS 8484.20.00.00
Gallium Arsenide Wafer Polisher Seal
Mechanical seal for chemical mechanical polishing (CMP) of GaAs compound semiconductor wafers. Classified HTS 8484.20.00.00 under semiconductor statistical notes for wafer preparation equipment. Uses alkaline slurries for mirror finish.
Single Spring Mechanical Face Seal
A mechanical seal featuring a single spring mechanism to maintain contact between rotating and stationary sealing faces, commonly used in industrial pumps. It falls under HTS 8484.20.00.00 as a mechanical seal designed for dynamic sealing applications in rotating equipment. These seals prevent leakage of fluids under pressure by balancing axial forces.
Bellows Mechanical Seal
Metal or elastomeric bellows mechanical seal providing axial movement for sealing in agitators and mixers. Under HTS 8484.20.00.00 as it uses mechanical faces with bellows for pressure compensation. Suited for corrosive environments in pharmaceutical production.
Double Mechanical Seal Arrangement
Tandem or back-to-back double mechanical seals with barrier fluid provisions for hazardous fluid handling in petrochemical pumps. HTS 8484.20.00.00 covers these as mechanical seals despite dual faces. Provides redundancy for safety-critical applications.
Pusher Type Mechanical Shaft Seal
Spring-loaded pusher mechanical seal where sealing faces slide axially along the shaft in water pumps. Classified HTS 8484.20.00.00 for mechanical sealing mechanism. Common in HVAC and general water circulation systems.
Stationary Seat Mechanical Seal
Mechanical seal with stationary seat design where only the rotating face moves, used in high-speed turbines. HTS 8484.20.00.00 as mechanical seal variant. Reduces wear in continuous duty applications.