Twaron Aramid Staple Fibers
Twaron para-aramid staple fibers, not carded or combed, for ballistic protection and rope reinforcement. HTS 5503.11.00.00 applies to these unprocessed synthetic aramid staples. Known for ultra-high tensile strength in composite materials.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for textured or bulked continuous aramid yarn
Continuous aramid yarns, even textured, are in Chapter 54, not staple fiber headings.
If pre-impregnated with rubber for tire cord
Rubberized aramid cords classify as tire reinforcement materials under Chapter 59.
If already woven into fabric form
Woven aramid fabrics move to Chapter 51 or 54 depending on construction.
Not sure which classification is right?
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Import Tips & Compliance
• Include tensile strength specs in invoices to differentiate from commodity synthetics; ensure staple length under 200mm to confirm non-continuous status; pre-register with CBP for high-value defense-related shipments
Related Products under HTS 5503.11.00.00
Kevlar Aramid Staple Fibers
Short-cut Kevlar aramid staple fibers, not carded, combed, or processed for spinning, used primarily for reinforcement in composites and protective textiles. Classified under HTS 5503.11.00.00 as synthetic staple fibers of aramids in their raw, unprocessed form. These fibers leverage aramid's high strength-to-weight ratio for demanding applications.
Nomex Aramid Staple Fibers
Nomex meta-aramid staple fibers, unprocessed for spinning, ideal for high-temperature resistant fabrics like firefighter gear and industrial felts. Falls under HTS 5503.11.00.00 due to its aramid polyamide composition and raw staple state. Offers inherent flame retardancy without additional treatments.
Technora Aramid Staple Fibers
Teijin Technora hybrid aramid staple fibers, raw and unprocessed, used in automotive composites and marine ropes. Classified in HTS 5503.11.00.00 for aramid synthetic staples not further processed. Combines para and meta-aramid properties for versatility.
Kevlar 49 Aramid Staple Fibers
High-modulus Kevlar 49 aramid staple fibers for aerospace composites, unprocessed for spinning. HTS 5503.11.00.00 captures these premium aramid staples in raw form. Engineered for maximum stiffness in structural applications.
Nomex 410 Staple Fibers
Standard Nomex 410 meta-aramid staple fibers, not carded, for thermal insulation fabrics. Under HTS 5503.11.00.00 as unprocessed aramid polyamide staples. Provides inherent FR protection up to 400°C.
Para-Aramid Staple Fiber Blend Base
Unprocessed para-aramid staple fibers designed as blend component for cut-resistant gloves. HTS 5503.11.00.00 for raw aramid staples. High tenacity for personal protective equipment.