Cold Smoke Seals

cold smoke seal is a specialized sealing material designed to block the spread of smoke through door gaps during the early stages of a fire. Installed on fire-rated doors, emergency exit doors, or partition door frames, it significantly slows smoke migration, providing critical time for safe evacuation.

Smoke Containment Priority: Provides physical sealing effectiveness at ambient temperatures (without requiring heat activation), effectively blocking cold smoke transfer between indoor and outdoor spaces.

Material Versatility: Constructed from flexible materials like PVC, TPV, or silicone, often integrated with elastic bristles or rubber strips for superior gap-filling conformability.

Passive Operation: Unlike fire expansion seals, it functions immediately at room temperature—no thermal triggering needed.

Compatibility: Can be used independently or combined with expansion-type fire seals for dual protection against smoke and flames.

Easy Installation: Features self-adhesive backing or press-fit designs, suitable for both new construction and retrofit projects.

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RRYSJJ Series Soundproof and Smoke-proof Corner Seals (Soft and Hard Composite)

The structure of the RRYSJJ series soundproof and smokeproof corner seal is a composite extrusion molding of soft glue and hard glue. The adhesive part is hard glue and the sealing part is soft glue. It can provide soundproof, smokeproof and heat insulation (hot and cold) sealing for the gaps between the door edge and the door frame.

Unique and convenient installation method
The product has strong self-adhesiveness
Minimum gap sealing size: 3mm/4mm
Excellent compression and deflection performance
Due to the low coefficient of the fin material, it can effectively reduce the closing force

The role of RRYSJJ series acoustic and smoke corner seal installed on the door

  1. Multi-functional Integrated Sealing Protection
    Noise Reduction: High-density material absorbs mid-to-high-frequency noise (e.g., conversations, equipment operation), achieving 25-30dB* sound reduction for a quieter indoor environment.

    Smoke & Air Barrier:
     Flexible sealing layer tightly adheres to door gaps, blocking fire smoke (>95% particulate filtration) and thermal air leakage, enhancing fire safety and energy efficiency.

    Thermal Buffering:
    Reduces condensation caused by indoor-outdoor temperature differences, protecting door frames and extending door lifespan.

  2. Simplified Installation & Adaptability
    Self-Adhesive Design: Pre-coated backing enables peel-and-stick installation—no tools or additional adhesives required. Installable by one person within 10 minutes.

    Hybrid Rigid-Flex Structure:
    Rigid Support Corner: Maintains seal shape, preventing door compression deformation.
    Flexible Sealing Lip:
     Self-adjusts to 0.5-5mm irregular gaps, compatible with wood, metal, and other door frames.

    Ultra-Thin Compatibility:
     Covers narrow gaps as small as 3mm, remaining discreet without affecting door aesthetics or smooth operation.

Cold Smoke Seals

RRYSJJ Series Acoustic And Smoke Corner Seal

RRY01 Series Acoustic And Smoke Seal

RRY03 Series Dual Cold Smoke Seals

RRY05 Series Acoustic And Smoke Seal

The Role of RRY Cold Smoke Sealing Strips in Safes

RRY series acoustic and smoke seal

RRY series acoustic and smoke seals demonstrate effective acoustic and smoke perimeter sealing for use in new or retrofit door applications.

Unique easy installation
Minimum gap seal size 2mm-4mm
Excellent compression and deflection performance
Lower opening and closing forces than a bubble seal
Good tear strength,which is important in a flipper application

RSR Series Smoke Seals for Safes

RSR series smoke seal is manufactured of high temperature silicone rubber which is self-extinguishing.It can be used on gun safes and fireproof safes that require smoke protection.

Designed for tighter frames
Demonstrates extremely low closing force
Impervious to fungus and mildew
Function:Seal gap to prevent smoke weather dust
Product comes with strong self-adhesive
Length:200m/roll and 2 rolls/carton

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Functions of RSR smokeproof sealing strips on safes

RSR is an adhesive-backed silicone gasket seal,it demonstrates extremely low closing force with excellent compression and the door latches easily.

RSR/RPB series flexible fireproof intumescent and smoke seal

RSR/RPB series flexible fireproof intumescent and smoke seal is kind of high temperature extruded silicone gasket compounding with RPB series intumescent seals.

Intumescent material expansion ratio:20-30times
Demonstrates extremely low closing force
Impervious to fungus and mildew
Function:Seal gap to prevent smoke weather dust fire and heat spreading
Product comes with strong self-adhesive

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Benefits of Installing RSR/RPB Series Flexible Intumescent and Smoke Seals on Safes

1. Enhanced Fire Protection
The RSR/RPB series combines high-temperature extruded silicone gaskets with RPB intumescent materials. Upon exposure to heat, the intumescent component expands 20–30 times its original thickness, effectively sealing gaps and delaying the spread of fire. This significantly enhances the fire resistance rating of the safe.

2. Effective Smoke Sealing
Smoke infiltration can cause damage even before flames reach the safe. The RSR/RPB seals are designed to block both fire and smoke, providing comprehensive protection for valuable contents like documents, cash, and digital media.

3. Flexible Design with High Compatibility
Made from flexible silicone material, these seals conform easily to the contours of safe doors and frames. They are easy to install and provide a long-lasting airtight seal, suitable for various types and brands of safes.

4. Extremely Low Closing Force
RSR/RPB seals are engineered for minimal closing resistance, ensuring that the door can be opened and closed smoothly without adding pressure or stress to the locking mechanism.

5. Excellent Weather and Aging Resistance
The silicone base offers outstanding durability against heat, humidity, and aging. This ensures long-term performance without frequent maintenance or replacement.

6. Upgraded Safety and Compliance
By installing RSR/RPB seals, the overall safety level of the safe is enhanced, helping it meet or exceed international fire safety standards such as UL or BS.

Fire and Smoke Resistant Expansion Seal Strips

Material Composition
Constructed from fire-resistant rubber combined with graphite-based or sodium silicate-based intumescent compounds.
Daily Function
Acts as a gap filler between door frames and doors during normal use, ensuring airtightness and noise reduction.
Fire Response Mechanism
Expands rapidly when exposed to high temperatures (typically above 120-200°C), swelling to seal gaps completely.
Forms a dense, fire-resistant char layer to block flames, smoke, and toxic gases, delaying fire spread.
Dual functionality: everyday sealing + emergency fire protection.
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Fire and Smoke Resistant Expansion Seal Strips

RYZP series rigid fireproof intumescent seal

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RYZP series rigid fireproof intumescent seal

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RYZS series rigid fireproof intumescent seal

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RPB-CR series seal

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Functions of RYZWP Fireproof Intumescent Seal

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Functions of RYZWP Fireproof Intumescent Seal

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Functions of RYZWS Fireproof Intumescent Seal

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RPBJQC Flexible Fireproof Intumescent Seal

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Get Your Custom Cold Smoke Seals

RESSA is a trusted supplier of full range of cold smoke seals for interior and exterior door application, with years of experience in creating high-quality fire and smoke protection solutions. It specializes in manufacturing high-quality custom smoke gaskets to cover various need of customers. Here are your custom selections:

Our Certificates in Cold Smoke Seals

RESSA Test certificate (5)
RESSA Test certificate (6)
RESSA Test certificate (1)
RESSA Test certificate (4)

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Cold Smoke Seals for Doors FAQs

Smoke seals are specialized seals installed on doors to prevent the passage of smoke through gaps during a fire, enhancing the door’s ability to protect and contain the spread of smoke.

It includes two types, first is cold smoke seals for common doors and second is the intumescent and fire smoke seals for fire doors.

Smoke seals include cold smoke seals for doors and the intumescent fire smoke intumescent seals for fire doors.

  • The cold smoke seals are designed to block the gaps between the door and the frame or between double doors, preventing smoke from passing through and aiding in maintaining clear escape routes and compartments.
  • The intumescent fire and smoke seals are compound together the intumesent seals with cold smoke design. When fire happens or exposed in heat, the intumescent seals will start to expand and seal the space between door and frame, to prevent the fire and smoke spreading to the other rooms.

We offer a variety of standard dimensions for our paper boxes, including small, medium, and large sizes. However, we can also provide custom sizes as per the specific requirements of our customers.

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.

They are essential for fire doors and doors in critical areas where the containment of smoke is crucial for safety and compliance with fire safety regulations.

RESSA smoke seals are designed for durability and long-term performance, but it’s important to inspect them regularly and replace them if they show signs of damage or wear.

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