Silicone Rubber Unvulcanized Paste from Mexico
Paste form of liquid silicone rubber (LSR) compounded unvulcanized with catalysts and fillers for molding applications. Classified in HTS 4005.99.00.00 as other primary form compounded rubber, containing plasticizers disallowed in earlier headings. Excludes electrical appliances of Section XVI.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Provide rheology test results showing paste viscosity as primary form
• Ensure no prevulcanization to avoid 4006
• Pitfall: confusing with synthetic polymers under Chapter 39