• Suzhou Polywell Engineering Plastics Co.,Ltd
    Mr. Paolo Celani
    Thank you very much for very good news! We appreciate your honesty and collaboration. You have supplied good dies, all sizes within tolerance. We have ordered dies for a total amount of more than 200,000 USD and we are continuing to order. Thank you again to you and your very professional team.
  • Suzhou Polywell Engineering Plastics Co.,Ltd
    Mr. Martyn Haines
    Thank you for your help with this order and if ever you need someone to tell customers how helpful you are just tell them to contact me.
  • Suzhou Polywell Engineering Plastics Co.,Ltd
    Mr. Dietmar Dürr
    I received your samples. I agree to Mr. Wölki, they looks pretty good. We will arrange the balance payment. Please pack the mold and send them asap.
Contact Person : Camille Cai
Phone Number : 86-13584481777
Whatsapp : +8613584481777

Customized Thermal Break PA66GF25 Strip With Shore hardness 80±5

Place of Origin China
Brand Name Polywell
Certification SGS
Model Number I,C,T,CT,HK
Minimum Order Quantity 5000 meters
Price negotiation
Packaging Details roll or linear
Delivery Time 15-20 working days
Payment Terms 50%T/T before production, 50%T/T before loading
Supply Ability 100000 meters per day

Contact me for free samples and coupons.

Whatsapp:0086 18588475571

Wechat: 0086 18588475571

Skype: sales10@aixton.com

If you have any concern, we provide 24-hour online help.

Product Details
Payment Term T/T, Western Union Application Doors/ Windows/ Machinery
Material PA66GF25 Temperature Resistance ≥240
Thickness Customized Performance High Strength/Corrosion Resistance/Heat Resistance/High Temperature Resistance
Color Black Shape Customized
Diameter 10-50mm Market Served Windows & Doors
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Product Description

Product Description:

Thermal Break Strip is a kind of polyamide strip specially designed for heat insulation. It can be custom-made in different sizes and thicknesses according to customer's requirements. It has excellent performance of high strength, corrosion resistance, heat resistance, and high temperature resistance – up to 240 degree Celsius. Thanks to its superior quality, Thermal Break Strip is widely used in many different applications, such as electrical insulation, automotive industry, construction, etc.

Thermal break is a reinforced polyamide strip (a non metallic, composite, structural, material) fixed between the inside and outside profiles, creating an insulated barrier within the window frame.

Customized Thermal Break PA66GF25 Strip With Shore hardness 80±5 0Customized Thermal Break PA66GF25 Strip With Shore hardness 80±5 1


  • Product Name: Thermal Break Strip
  • Width: Customized
  • Shape: Customized
  • Application: Doors/ Windows/ Machinery
  • Temperature Resistance: ≥240
  • Payment Term: T/T, Western Union
  • Function: Heat Insulation 

Customized Thermal Break PA66GF25 Strip With Shore hardness 80±5 2Customized Thermal Break PA66GF25 Strip With Shore hardness 80±5 3

Technical Parameters:

Item Unit GB/T 23615.1-2009 PW-Technical specification
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 ºC ≥230 ≥233
Melting point ºC ≥240 ≥240
Testing for tensile cracks - No cracks No cracks
Shore hardness - 80±5 80-85
Impact strength(Unnotched) KJ/m2 ≥35 ≥38
Tensile strength(longitudinal) MPa ≥80a ≥82a
Elasticity modulus MPa ≥4500 ≥4550
Elongation at break % ≥2.5 ≥2.6
Tensile strength(transverse) MPa ≥70a ≥70a
High temperature tensile strength(transverse) MPa ≥45a ≥47a
Low temperature tensile strength(transverse) MPa ≥80a ≥81a
Water resistance tensile strength(transverse) MPa ≥35a ≥35a
Aging resistance tensile strength(transverse) MPa ≥50a ≥50a

1. Sample water content less than 0.2% by weight.
2. Norm laboratory condition:(23±2)ºC and (50±10)% relative humidity.
3. The specifications marked with "a" only applies to I-shape strip otherwise, the specifications concluded between supplier and buyer through consultation, shall be written in contract or purchase order.


Aluminium window has the disadvantage of limited thermal insulation. Its Uf value, which indicates the amount of heat that passes through a window profile, is simply too high. If your windows have standard aluminium profiles, your home may develop condensation, or even mould. Besides the resulting high repair costs, household mould also aggravates respiratory problems such as asthma.

But that disadvantage has now been completely eliminated if you install polyamide strips in aluminum windows. In fact, thanks to the development of a new invention known as thermal break profiles, aluminium is at least as good as its competitors. In these profiles, produced with specialized machines, a polyamide strip is placed between the inner and outer sections of the profile.


Polyamide is a plastic that insulates more than 500 times better than aluminium, so thermal break profiles have a much lower Uf value - and transmit much less heat or cold. As a result, your home stays warmer in winter, while keeping the heat outside more easily in summer.

Customized Thermal Break PA66GF25 Strip With Shore hardness 80±5 4


Support and Services:

Before sales

1. introduce products in detail
2. recommend suitable solutions
3. provide with reference information

During manufacturing

1. provide with layout and engineering conditions
2. inform the processing status
3. offer related documents

After Sales

1. provide installation, commissioning and training
2. offer spare parts
3. Provide with necessary technical support


Package & Delivery:

Conventional straight package: 6m per piece. Cutting length can also be customized based on customer’s requirements.

Roll package: 300-500 meters per roll, limited to type I and type C.

According to the specific requirements of customers, large-scale production, packaging and computer laser code printing can be carried out.

Customized Thermal Break PA66GF25 Strip With Shore hardness 80±5 5


Our Company:


Suzhou Polywell Engineering Plastics Company is located in the city of Zhangjiagang, Jiangsu Province, China. Our company has devoted more than ten years to the research and development and production of nylon extruding profiles. 

Customized Thermal Break PA66GF25 Strip With Shore hardness 80±5 6

Contact us:

Pleass feel free to contact us if you have any questions.
Name: Camille

E-mail: camille@szpolywell.cn

Tel: +86-13584481777 (WhatsApp)

Address: Zhangjiagang City, Jiangsu Province, China