Based on improved design idea,RPB-YX series special shape fireproof intumescent seal combines double functions of impact-resistant and fireproof sealing together,suitable for armored doors.
Structure:Flame retardant PVC bubble Intumescent graphite
Expansion ratio:7-20 times
Application:Armored door,timber and metal fireproof door
Function:Seal gaps to prevent fire heat and smoke spreading
Easy insert installation no need adhesive
Enhances fire resistance to form a complete protection system
During a fire, the sealant rapidly expands (up to 7-20 times its original size), effectively sealing the gaps between the window frame and glass. This prevents flames, high-temperature gases, and smoke from passing through, delaying the spread of fire.
Protects the vulnerable edges of glass
While fire-resistant glass can withstand high temperatures, its connection points with the window frame remain weak areas susceptible to heat damage. RPB-YXGD effectively reinforces the protective capabilities of these joint areas.
Compatible with various window structures
The sealant can be customized into special shapes to fit rectangular, circular, curved, and other irregular window types, offering flexible adaptation to diverse design requirements.
Easy installation, suitable for factory pre-embedding or on-site construction
No special tools are required for installation, saving construction time and costs. It is ideal for use by window manufacturers or at assembly sites.
Water-resistant and aging-resistant for long-term use
The material is non-absorbent and resistant to deformation, maintaining stable performance in humid or rainy environments such as kitchens, basements, and coastal buildings.
Aesthetic without obstructing visibility
Available in low-key colors or concealed designs, it does not compromise the transparency or overall aesthetics of the window. This makes it particularly suitable for spaces with visual requirements, such as viewing windows and fire partition windows.
1. High-Efficiency Flame Retardancy and Fire Resistance
High-Temperature Expansion Characteristics: When exposed to fire or high temperatures, the graphite seal rapidly expands (typically with an expansion ratio of 7–20 times), filling gaps and door seams to form a dense carbonized layer, effectively blocking flames and high-temperature transfer to unburned areas.
High-Temperature Stability: The graphite material exhibits exceptional heat resistance (typically withstanding over 1000°C), ensuring the fire door’s structural integrity during a fire and extending its fire resistance rating (e.g., 1–3 hours or more).
2. Superior Smoke Sealing Performance
Dual Sealing Mechanism: At normal temperatures, the seal tightly adheres to door gaps to minimize airflow. During a fire, its expanded state completely blocks gaps, preventing the spread of toxic smoke and buying critical time for evacuation and firefighting.
Graphite Adsorption Properties: Graphite’s inherent adsorptive qualities further reduce the penetration rate of smoke particles, enhancing smoke suppression.
3. Durability and Environmental Adaptability
Anti-Aging Performance: The graphite material resists corrosion, oxidation, and deformation, ensuring long-term reliability in harsh environments (e.g., humidity, extreme temperature fluctuations).
High Mechanical Strength: Withstands frequent door operation without significant wear, offering a service life far exceeding that of conventional rubber seals.
Precise Perimeter Protection
Custom-designed to perfectly fit fireproof glass edges, ensuring tight sealing and optimal fire containment.
High-Expansion Sealing
Expands 7-30 times its original size under heat, effectively filling gaps to block flames, smoke, and toxic gases.
Water-Resistant & Durable
Unaffected by moisture, making it suitable for humid environments (e.g., bathrooms, coastal areas) without performance degradation.
Easy Installation
No special tools required, reducing labor time and costs for both factory pre-installation and on-site applications.
Passive Fire Safety
Works automatically without power or maintenance, ensuring reliable protection during emergencies.
Enhanced Fire Rating Compliance
Helps fireproof windows meet international standards (EN/UL/GB) by maintaining structural integrity under high temperatures.
Versatile Compatibility
Adapts to various fire-resistant glass types and window designs, including custom shapes and sizes.
Product are available to be customized as per glass dimension.
In the event of a fire,RPB-FGC will expand and fill the gaps between glass and profile to prevent the spread of fire smoke.
This solution is specially designed for fire protection in high-speed rail systems. It utilizes intumescent materials that expand rapidly under heat, forming an insulating barrier to block fire, smoke, and hot gases. Ideal for use in interior compartments, cable penetrations, door assemblies, and joint gaps within train cabins and systems.
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U-shaped structure with interior grooves and protrusions design ensures easy and solid installation of seals around the window glass perimeter without any adhesive. It can fix glass solidly and protect glass from shaking or movement.
Structural Mechanical Optimization
U-shaped section radius of curvature (R=2.5±0.1mm) precisely matches the glass edge thickness.
Gradient distribution of 12 groups/mm² of bumps provides ≥35N/cm² of sustained clamping force.
45° staggered groove design reduces stress concentrations by 80%.
Functional Advantages
300% increase in installation efficiency: linear installation speeds of up to 2m/min with push-in assembly
Anti-vibration rating: Passed UIC566 Class B vibration test (5-150Hz sweep, 3G acceleration)
Displacement suppression: Maintains seal interface integrity within ±1.5mm dynamic deformation range
The intumescent fireproof sleeve provides fire protection for cables and wires in high-speed train, especially for the bare connections and cross parts.When meet fire or exposed to high temperature, the intumescent sleeve will expand to seal the gap and prevent the flame spreading along with wires, protect the inside cables and wires. And the sleeve has excellent heat dissipation performance, which will not raise the high temperature around wires and cables.
Designed to seal around electrical and data cable penetrations in high-speed trains. Prevents the spread of fire, heat, and smoke through cable routing paths.
Intumescent Sleeves / Collars
Preformed for single or grouped cables through partitions
RESSA is a trusted supplier of full range of intumescent fire door strips, with years of experience in creating high-quality fire protection solutions. It specializes in manufacturing high-quality custom fire door seals and gaskets to cover various need of customers. Here are your custom selections:
A wide range of customizable colors options of our intumescent fire door strips are available for fire door strips, black red grey brown cream and customized colors. This allows the sealings with your doors and frames design, ensuring a cohesive and professional appearance.
We offer a wide range of sizes to meet customers’ needs. Whether you need flexible fire door strips, rigid fire door strips or any special sizes of fire door strips, we will cooperate to design. We provide the length cutting service for accurate length requirement within (+1mm, -1mm) tolerance.
Customization of different intumescent materials are available your spefic designed fire doors, including graphite intumescent materials and sodium silicate intumesent materials. Helping to enhance the fire protection for your fire doors and meet different test standards.
RESSA intumescent fire door strips are engineered with a proprietary heat-activated expansion process that ensures rapid and uniform swelling of seals in fire, creating an impenetrable barrier against fire and smoke.
Surface mounted fire door strips equipped with industrial-grade adhesive, our strips self adhere firmly to a variety of surfaces, ensuring a long-lasting seal that won’t degrade over time or under extreme temperatures.
Beyond fire door insulation, some our intumescent fire door strips also offer excellent waterproof property, smoke prevent property, acoustic insulation and thermal properties, adding additional value to the installation.
Our products pass the testing of fire doors integrity and insulation test according to the BS476 test standard and have received certification from recognized safety standards organizations, assuring their effectiveness and reliability.
Fire Door Strips are specialized seals installed on fire doors to prevent the passage of smoke, flames, and toxic gases during a fire, enhancing the door’s ability to compartmentalize and contain the spread of fire.
Over-painting of fire door strips should not compromise performance in a fire situation – however, do not suggest paint over fire door strips as this will certainly compromise the sealing containment performance and use life. If the intumescent strips on fire doors has already been painted over, you will need to replace it. Our seals are available in a range of colours, plus woodgrain and metallic finishes, so over-painting should not be necessary.
In the event of a serious fire, fire doors are one of the most important components in ensuring safe exit, containing the fire and saving lives. But they can be rendered useless by not using the correct components including intumescent strip. Gaps around the four sides of a fire door leaf are essential, it is the only way the door can open and close. But these gaps create a point of weakness, where fire can take hold and destroy the door, and toxic and smoke can pass through. RESSA intumescent strip works by sealing around the edges and gaps of a fire door and door frames in the event of a fire.
In essence, all intumescent do the same job, but not necessarily in the same way. You’ll need to know which specifications you require; consult our technical team to discuss this area in depth at [email protected].
Yes, RPB Series flexible fire door strips are suitable for both new builds and for retrofitting into existing structures, providing an effective fire-stopping solution. The intallation method is very easy by self-adhesive.
