Polyurethane Flame-Resistant Backing Sponge Strip: Secure Sealing · Efficient Installation · Fire Protection Guardian Product Overview: The polyurethane flame-resistant backing sponge strip is a multifunctional composite sealing material that integrates **elastic sealing, fire resistance, flame retardancy, and easy installation**. Using high-performance polyurethane foam as the base material, it undergoes special flame-retardant treatment and pre-coated with strong pressure-sensitive adhesive, enabling "instant tear-and-stick" quick installation. It serves as an ideal choice for secure sealing in construction, industrial, and transportation sectors. Core Advantages 1. Superior Flame Retardancy Self-extinguishing upon contact with fire, low smoke and toxicity, effectively delaying fire spread and enhancing building safety ratings. 2. Powerful Backing Design Features high-adhesion pressure-sensitive adhesive on one side, allowing easy attachment to metal, plastic, concrete, and other substrates using peel-off paper, saving time and effort. 3. Long-lasting Elasticity and Sealability Polyurethane foam maintains excellent elasticity under prolonged compression, effectively filling gaps while providing windproof, dustproof, impact-resistant, soundproof, and shock-absorbing properties. 4. Weather Resistance and Aging Resistance Stable performance in both indoor and outdoor environments. Typical Applications Architectural Windows: Sealing window frames and door gaps to block wind, rain, and noise while improving thermal insulation and energy efficiency. Fire Protection Projects: Sealing cable conduits penetrating walls to meet fire codes (e.g., UL/EN certified scenarios). Industrial Equipment: Cabinet sealing, equipment vibration damping, and electrical wiring protection. Transportation: Door gap sealing and noise reduction for automobiles, high-speed trains, and ships. Curtain Wall Joints: Elastically filling architectural curtain wall expansion joints to accommodate structural displacement. Technical Parameters Reference | Project | Parameter Example | | Material | Flame Retardant Polyurethane Sponge (FR PU) | | Flame Retardant Rating | GB 8624 B1 / UL94 V-0 | | Common Specifications | Width 5-50mm, Thickness 3-50mm | | Colors | Gray/Black/White (Customizable) | Why Choose Us: -Comprehensive Safety Certification: Provides authoritative flame retardancy test reports to meet various project acceptance requirements. -Customized Services: Supports flexible customization according to dimensions, adhesive type, and density for special scenarios. -Eco-Friendly and Reliable: Compliant with RoHS standards, halogen-free and low-smoke, ensuring green safety.