Silicone-Based Glazier's Putty from Canada
A mastic compound used by glaziers to seal glass panes in window frames, providing waterproofing and adhesion. It falls under HTS 3214.10.00.20 as a glazier's putty, a non-refractory mastic for sealing purposes. This product is distinct from bituminous mastics excluded by chapter notes.
Duty Rate — Canada → United States
13.7%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Verify composition to ensure it qualifies as non-bituminous mastic, avoiding exclusion under chapter note (c)
• Provide safety data sheets (SDS) for VOC content to comply with EPA import regulations
• Label containers with curing time and application temperature to prevent customs reclassification as paint