Turbine Interstage Seals from Canada
Labyrinth seals preventing gas leakage between turbine stages in non-aircraft gas turbines for oil & gas compression. Manufactured from abrasion-resistant alloys with precise tooth geometry. HTS 8411.91.90.40 covers non-aircraft turbine sealing parts.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Provide clearance specification charts matching turbine rotor/stator dimensions
• Declare seal tooth geometry critical for classification as turbine-specific
• Avoid generic seal classification under 8484 by proving pressure differential capability