Butyl Rubber Vistanex L-100
Vistanex L-100 is a high molecular weight elastomeric polyisobutylene with over 95% isobutylene content, imported in primary pellet form under HTS 3902.20.10.00. Known for tackiness, it serves as a pressure-sensitive adhesive base in tapes and sealants. Its elastomeric nature distinguishes it from rigid polyolefins.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If predominantly polypropylene monomers
Per subheading note (a)(4), classification follows the predominant monomer unit; polypropylene-dominant shifts to 3902.10.00.
If petroleum sulfonates or additives exceed thresholds
Certain chemically modified or additive-heavy versions may fall under 3911 as resinous compounds, not pure primary polymers.
If prepared as an adhesive resin
Adhesive preparations from polyisobutylene are classified in Chapter 35, not as primary polymers in Chapter 39.
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Import Tips & Compliance
• Submit manufacturer's spec sheets confirming elastomeric grade and 95%+ monomer purity
• Watch for reclassification if blended polymers predominate other monomers
• Use proper UN packaging for sticky polymers to prevent shipping issues
Related Products under HTS 3902.20.10.00
Elastomeric Polyisobutylene Rubber
Elastomeric polyisobutylene is a synthetic rubber polymer where isobutylene monomer units constitute 95% or more by weight, classified under HTS 3902.20.10.00 as elastomeric polyisobutylene in primary form. It is used in manufacturing tires, seals, and adhesives due to its high elasticity and impermeability to gases. This primary form excludes finished articles or compounded products.
Elastomeric Polyisobutylene Pellets for Tire Inner Liner
These pellets are elastomeric polyisobutylene with 97% isobutylene monomer content, designed for compounding into tire inner liners under HTS 3902.20.10.00. Their gas impermeability and elasticity qualify them as primary form elastomers. Supplied unvulcanized for downstream rubber processing.
Opanols Elastomeric Polyisobutylene Resin
Opanols are medium molecular weight elastomeric polyisobutylene resins meeting the 95% isobutylene criterion for HTS 3902.20.10.00 classification in primary forms like granules. Used in chewing gum bases and cable insulation for elasticity and moisture resistance. Excludes any finished plastic articles.
High Cis Elastomeric Polyisobutylene HMW
High molecular weight (HMW) elastomeric polyisobutylene with high cis content, over 95% isobutylene by weight, imported as primary polymer under HTS 3902.20.10.00. Ideal for sealants, roofing membranes, and vibration dampeners due to superior elasticity. Primary form ensures classification before vulcanization.