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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If rigidity dominates over elasticity
Non-elastomeric polysulfones remain in general 'Other' of 3911.90.
If PVC/polysulfone copolymer with PVC predominant
Predominant monomer PVC dictates classification to 3904 per note (a)(4).
If plates/sheets extruded from this resin
Non-primary forms like sheets shift to Chapter 39 plates and sheets.
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Import Tips & Compliance
• Ensure pellets are uncompounded primary polymer; compounded versions go to 3904.10 or similar
• Document elastomeric properties via stress-strain curves to justify over non-elastomeric 3911.90.90
Related Products 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.