Concrete Expansion Joint Filler Strip (Closed-Cell Polyethylene Foam)

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Product

Concrete Expansion Joint Filler Strip

Specifications:

Material:PE / EPE / XPE Foam

Cell Structure:Closed Cell

Density:25kg/m3

Size: 10mm*75mm*25m/10mm*100mm*25m/Customized

Operating Temperature: -40°C to +80°C

Water Resistance: Excellent

Customization: Density, thickness, width and length

Thermal Conductivity: ≤0.050 W/m·K

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Product Details

Applications


Expansion Joint Foam is a flexible, lightweight closed-cell polyethylene foam engineered specifically as a high-performance joint filler and sealant backing in modern concrete construction. It effectively fills expansion, contraction, and isolation joints, allowing concrete slabs and structures to safely expand and contract with severe temperature fluctuations while preventing structural cracks and reducing internal stress.


Built with advanced chemical cross-linking, our XPE/IXPE foam features an ultra-dense closed-cell structure that completely resists moisture penetration, harsh chemicals, and UV weathering. Because polyethylene products are utilized across diverse and demanding applications—including the automotive and healthcare sectors where reliability is paramount—our production adheres to rigorous quality standards to guarantee absolute consistency and performance.


  • Main Applications: Concrete slabs, brick and blockwork joints, isolation and hinge joints, retaining walls, footpaths, highways, airports, bridges, automotive components, and medical equipment insulation.


Key Features


  • Closed-cell polyethylene – non-absorbent, moisture-proof, and weather-resistant

  • Compresses easily with good recovery – accommodates concrete movement

  • Lightweight and flexible – easy to cut and shape on site

  • Chemical and UV resistant – suitable for interior and exterior use

  • Compatible with most sealants – works with liquid and paste-type sealants, silicones, and grouts

  • Self-adhesive option available – for quick installation on vertical or overhead surfaces

  • Non-toxic and CFC/HCFC-free – environmentally safe


Packaging, Storage & Logistics

  • Secure Export Packaging: Packed in reinforced woven bags or protective heavy-duty plastic film layers to prevent compression damage, scratching, or moisture exposure during long-distance transit.

     

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Provide your joint dimensions, project specifications, and quantity for a customized quote. Standard sizes ship immediately; custom sizes produced on request.


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