Butyl Rubber O-Ring for Vacuum Chamber Seals from Mexico
Low-permeation butyl IIR O-ring for maintaining vacuum in semiconductor processing chambers. Classifies under HTS 4016.93.50.10 as vulcanized rubber O-ring seal. Excellent gas impermeability.
Duty Rate — Mexico → United States
12.5%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Outgassing data sheets required for cleanroom/semiconductor qualification
• Specify permeation rates vs other rubbers to justify butyl classification
• ESD-safe packaging prevents contamination during transit