Butyl Rubber Glazing Sealant from Japan
Butyl rubber glazing sealant is a non-hardening mastic tape or compound used for sealing insulating glass units. Its dead-soft properties allow it to seal edges permanently, providing excellent weatherproofing. This product falls under tariff item 3214.10.90 as a caulking compound, not containing phenol-formaldehyde resin.
Duty Rate — Japan → Canada
6.5%
Import Tips
• Confirm the product is a mastic and not a rubber article, which would fall under a different chapter
• Ensure it is not classified as a paint or varnish
• Keep product specifications for CBSA review