Elastomeric
Petroleum resins, coumarone-indene resins, polyterpenes, polysulfides, polysulfones and other products specified in note 3 to this chapter, not elsewhere specified or included, in primary forms: > Other: > Elastomeric
Duty Rate (from China)
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
Except as provided in headings 9903.88.12, 9903.88.17, 9903.88.20, 9903.88.54, 9903.88.59, 9903.88.61, 9903.88.63, 9903.88.66, 9903.88.67, 9903.88.68, 9903.88.69, or 9903.88.70, articles the product of China, as provided for in U.S. note 20(c) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(d)
Products classified under HTS 3911.90.10.00
Mercaptan Polysulfide Elastomer Base M-100
Mercaptan Polysulfide Elastomer Base M-100 is a low-viscosity primary resin for two-part sealants. Classified in HTS 3911.90.10.00 for elastomeric polysulfides, with thiol groups enabling crosslinking. Primary form ensures it stays in heading 3911, not as finished rubber.
Low-Tg Elastomeric Polysulfone Pellets
Low-Tg Elastomeric Polysulfone Pellets offer glass transition below -40°C for cold-flexible applications. Under HTS 3911.90.10.00 as primary elastomeric polysulfones per Chapter notes. Pellet form confirms primary state.
Crosslinkable Polysulfide Elastomer Prepolymer
Crosslinkable Polysulfide Elastomer Prepolymer for potting compounds, elastomeric per 3911.90.10.00. Primary liquid form with pendant thiols.
UV-Resistant Elastomeric Polysulfide Resin
UV-Resistant Elastomeric Polysulfide Resin for outdoor sealants, classified 3911.90.10.00.
High-Sulfur Elastomeric Polysulfone Gum
High-Sulfur Elastomeric Polysulfone Gum base for specialty rubbers, HTS 3911.90.10.00.
Liquid Polysulfide Polymer LS-50
Liquid Polysulfide Polymer LS-50 is an elastomeric polysulfide prepolymer in primary form used as a base for sealants and adhesives. It falls under HTS 3911.90.10.00 as an elastomeric product specified in note 3 to Chapter 39, in primary forms (not mixed with other substances). Its high elasticity and sulfur linkages distinguish it from other polymers.
Thiol-Terminated Polysulfide Prepolymer LP-3
Thiol-Terminated Polysulfide Prepolymer LP-3 is a viscous, elastomeric liquid used in aerospace sealants and coatings. Classified under HTS 3911.90.10.00 for elastomeric polysulfides in primary forms per subheading rules on polymer content. Its mercaptan-terminated structure provides elasticity for high-performance applications.
Elastomeric Polyether Polysulfide Resin PER-50
Elastomeric Polyether Polysulfide Resin PER-50 is a primary form copolymer for flexible sealants in construction. It qualifies for HTS 3911.90.10.00 as an elastomeric polysulfide where the named units contribute ≥95% by weight per subheading note (a)(2). The polyether modification enhances flexibility without altering primary classification.
High-Rebound Elastomeric Polysulfone LP-55
High-Rebound Elastomeric Polysulfone LP-55 is a thermoplastic elastomer resin in pellet form for injection molding. Under HTS 3911.90.10.00 as elastomeric polysulfones in primary forms, meeting note 3 specifications. Its sulfur-ether backbone provides rubber-like rebound properties.
Aerospace-Grade Elastomeric Polysulfide Sealant Resin
Aerospace-Grade Elastomeric Polysulfide Sealant Resin is a primary form polymer for fuel tank coatings. HTS 3911.90.10.00 covers its elastomeric nature under polysulfides, compliant with 95% monomer rule. High chemical resistance suits aviation demands.