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Natural Color PA66 GF25 Pellets are high-performance glass fiber reinforced engineering plastics, formulated with 25% glass fiber added to polyamide 66 (PA66) resin and integrated with high-efficiency halogen-based or halogen-free flame retardant systems. As a flagship product of Shuangming Plastic, this material is certified to the stringent UL94 V-0 flammability standard, perfectly retaining PA66’s inherent mechanical properties like high strength, rigidity and heat resistance while drastically reducing flammability and suppressing flame propagation. Available in standard 2.5mm pellets and 3×3 mm granules, including low-warpage variants, PA66 GF25 Pellets are suitable for both injection molding and extrusion processes, comply with international safety standards, and support personalized formulation adjustment. It is a reliable material solution for industries with strict fire safety and performance requirements, and we ensure stable inventory and consistent supply for global market demands.


The core advantage of PA66 GF25 Pellets is its superior flame retardancy, achieving self-extinguishing performance once the ignition source is removed. With flexible halogen/halogen-free flame retardant options, it meets global fire safety regulations and avoids toxic fume emission during combustion, providing essential safety barriers for end products.
Reinforced with 25% glass fiber, the material maintains high structural strength and dimensional stability in high-temperature working environments, and the low-warpage variant further optimizes processing performance, reducing product defect rates.
Boasting a high Comparative Tracking Index, Natural Color PA66 GF25 Pellets delivers outstanding electrical insulation performance, making it ideal for electrical and electronic components that require strict insulation protection.
The standardized granule design adapts to mainstream industrial processing technologies such as injection molding and extrusion, with good melt flow performance, improving production efficiency and reducing processing costs for manufacturers.
Stable & Consistent Supply: We maintain regular inventory of standard PA66 GF25 Pellets, ensuring fast delivery for conventional orders, and have the production capacity to fulfill large-volume custom orders stably.
Strong R&D & Customization Capability: As a professional manufacturer, we can adjust glass fiber content (e.g., PA66GF15, PA66GF30) and add anti-UV agents or other modifiers on the basis of flame retardant formulation to meet personalized application needs.
Cost & Weight Optimization: Replacing metal parts with PA66 GF25 Granules can achieve significant product weight reduction and production cost savings while ensuring performance, realizing lightweight upgrading for industrial components.
International Standard Compliance: All our PA66 GF25 Pellets comply with UL94 and other international standards, eliminating technical barriers for customers to export products to the global market.




| StandardReference | TestItem | Unit | StandardValue | TestValue |
|---|---|---|---|---|
| GB/T 23615.1-2009 | Density | g/cm³ | 1.3±0.05 | 1.28-1.35 |
| Linear Expansion Coefficient | K⁻¹ | (2.3-3.5)×10⁻⁵ | (2.3-3.5)×10⁻⁵ | |
| Vicat Softening Temperature | °C | ≥230 | ≥233 | |
| Melting Point | °C | ≥240 | ≥240 | |
| Pin Stress Cracking Test | - | No cracks at holes | No visible cracks | |
| Shore Hardness | - | 80±5 | 80-85 | |
| Impact Strength (Unnotched) | kJ/m² | ≥35 | ≥38 | |
| Tensile Strength (Longitudinal) | MPa | ≥80 | ≥82 | |
| Elastic Modulus | MPa | ≥4500 | ≥4550 | |
| Elongation at Break | % | ≥2.5 | ≥2.6 | |
| Tensile Strength (Transverse) | MPa | ≥70 | ≥75 | |
| High-Temp Tensile Strength (Transverse) | MPa | ≥45 | ≥48 | |
| Low-Temp Tensile Strength (Transverse) | MPa | ≥80 | ≥85 | |
| Water-Resistant Tensile Strength (Transverse) | MPa | ≥35 | ≥38 | |
| Aging-Resistant Tensile Strength (Transverse) | MPa | ≥50 | ≥53 |
A: Our glass fiber-reinforced nylon insulation strips feature high dimensional accuracy with tolerances strictly controlled within ±0.1mm, ensuring a perfect fit and cooperation with aluminum profiles in all installation scenarios.
A: Yes. Our high-performance PA66GF25 strips have excellent resistance to common acids, alkalis, and salts, and are not easily corroded in various indoor and outdoor environments, ensuring long-term use.
A: Our heat-resistant polyamide strips have basic fire resistance performance, which fully meets the fire safety requirements of building windows, doors and curtain wall components in mainstream building codes.
A: We provide a 10-year official warranty for all our PA66GF25 thermal break strips for aluminum frames and curtain walls, with professional after-sales support for any quality problems during the warranty period.
If you are looking for high-quality PA66GF25 Low Thermal Conductivity Strips for your construction, industrial manufacturing or other projects, or need customized polyamide thermal break strip solutions, please contact us at any time.