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When it comes to security doors, durability and functionality are of utmost importance. One often overlooked yet crucial component is the sealing strip. A well-designed sealing strip can significantly enhance the performance of a security door, providing benefits such as improved insulation, weather resistance, and noise reduction. In this article, we will delve into the features and advantages of PU (polyurethane) sealing strips with foam core, mesh backing adhesive, and waterproof membrane, which offer exceptional performance in terms of waterproofing, fire resistance, wind resistance, mold prevention, and sound insulation.
Our high-density PU foam seal strips with waterproof coating provide superior protection for security doors, combining weather resistance, flame retardancy, and noise reduction in one innovative solution. Designed for demanding entryway applications, these seals create an impenetrable barrier against drafts, dust, moisture, and noise.
✔ 3-Layer Protective Structure:
Outer Skin: Hydrophobic PU film coating (water-beading effect)
Core Material: Memory foam with open-cell structure (85% rebound rate)
Base Layer: Fiberglass-reinforced grid adhesive (3M™ 300LSE equivalent)
✔ Industry-Leading Performance:
Waterproof & Mold-Proof – IPX5 rating (withstands heavy rain exposure)
Flame Retardant – Meets UL94 V-0 & GB8624 B1 standards
Wind Resistance – Seals gaps up to 15mm (60% compression)
Noise Reduction – 32dB sound attenuation (STC rating)
Extreme Temperature Range -40°C to +90°C (-40°F to +194°F)
✔ Intelligent Design Features:
Self-Aligning Grid Adhesive – Prevents twisting during installation
Compression Recovery >90% after 50,000 open/close cycles
UV-Resistant – No cracking or hardening in sunlight
For Door Manufacturers:
Prevents warranty claims from moisture damage
Reduces door operation noise by 60%
Compatible with steel/wood/composite doors
For Installers:
Cuts installation time by 40% (peel-and-stick)
No priming required for most surfaces
Visible alignment lines for perfect positioning
For Property Managers:
Eliminates winter drafts (up to 80% air leakage reduction)
Inhibits microbial growth (ISO 22196 certified)
Maintenance-free 10+ year service life
Clean Surface – Wipe with alcohol (>70% purity)
Position & Press – Align with door frame edge
Secure Bond – Roll with J-roller for full adhesion
Available Configurations:
Standard Sizes: 8mm×6mm, 10mm×8mm, 12mm×10mm
Colors: Black (standard), brown
Length: 2m/strip (pre-cut) or continuous rolls
| Feature | Our PU Seal | EPDM Seals | Silicone Seals |
|---|---|---|---|
| Adhesion Strength | 4.8N/mm | 3.2N/mm | 2.1N/mm |
| Water Absorption | <0.5% | 1.8% | 0.3% |
| Compression Set | 8% | 15% | 5% |
| Fire Rating | V-0 | HB | V-1 |
Applications and Recommendations
This high-performance PU sealing strip is suitable for a wide range of security doors, including residential entry doors, commercial doors, and industrial doors. It is particularly for beneficial doors that are frequently exposed to harsh weather conditions or require high levels of security and insulation. When installing the sealing strip, it is important to ensure that the door frame is clean and dry. Proper cleaning will help to maximize the adhesion of the mesh backing adhesive and ensure a tight seal. Additionally, it is recommended to periodically inspect the sealing strip for any signs of wear or damage and replace it if necessary to maintain its effectiveness.
About JINHU
With over 20 years of professional experience, JINHU is a trusted manufacturer of high-quality rubber and silicone products, including mudflaps, sealing strips, and more. Visit our website to explore our full range of products:
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