Intumescent Fire Seals Strips & Fire Door Seal | Wedge India
Wedge India is a leading manufacturer and supplier of intumescent fire seals, fire door seal strips, and fire & smoke seals for passive fire protection. Our INTUR rigid and INTUF flexible intumescent seals are designed for 30 to 240 minutes fire resistance, tested to meet NBC India, BS 476, and EN 1634 standards.
Why Choose Wedge India Intumescent Seals?
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High Expansion Performance – Expands up to 20–60× when exposed to heat.
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Multiple Protection Options – Fire-only, Fire + Smoke, Acoustic, and Weather-proof.
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Zero Halogen & Rubber-Free – No toxic smoke during fire.
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Durability – Service life up to 30–50 years.
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Custom Sizes & Colours – From 10×4 mm to 40×2 mm.
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Available Across India – Fast delivery for OEMs, contractors, and distributors.
Applications of Intumescent Fire Seals
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Fire-Rated Doors – Seals gaps between door leaf and frame.
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Fire Door Smoke Seals – With brush or blade for cold smoke protection.
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Fire-Rated Windows & Glazing – Seals around fire-resistant glass.
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Expansion Joints – Maintains compartmentation in buildings.
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Service Penetrations – Around cables, ducts, and pipes.
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Industrial Fire Protection – Data centres, oil & gas, and power plants.
Types of Intumescent Seals & Prices
1. INTUR – Rigid PVC Encapsulated Fire Seals
Best for high-traffic areas and long-term durability. Available as: Fire Only, Fire & Smoke Brush, Fire & Smoke Blade, Fire, Smoke, Acoustic & Weather Protection. Popular Sizes: 10×4 mm, 15×4 mm, 20×4 mm. App. Price Range: ₹33–₹99 per meter (bulk OEM rates).
2. INTUF – Flexible Graphite Intumescent Seals
Versatile for irregular shapes and complex profiles. Applications: Curved doors, glazing beads, expansion joints, pipe wraps.
Popular Sizes: 10×2 mm, 15×2 mm, 20×2 mm, 30×2 mm, 40×2 mm. App. Price Range: ₹24–₹181 per meter (bulk OEM rates). Fire Door Seal Pricing – OEM & Project Supply
We offer two-tier pricing:
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OEM Bulk Rates – For 10,000+ meters order
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Project Supply Rates – Lower MOQ starting 1,000 meters
Wedge India’s Intumescent Fire Seal Brands
INTUR — Rigid, PVC‑encapsulated intumescent strips (fire only / fire+smoke with brush / single‑ or twin‑blade / fire+smoke+acoustic+weather variants). Size codes commonly 10×4, 15×4, 20×4 in 2100 mm length; also INTUR‑P variant shown in the price list.
INTUF — Flexible, rubber‑free, zero‑halogen graphite strips & sheets (grades INTUF 10, 14, 20), supplied as 2.1 m strips and sheet formats; high expansion ratio and long service life noted.
Performance & composition: Rubber‑free, zero‑halogen flexible range (INTUF); rigid range (INTUR) housed in PVC for durability/aesthetics; both expand in heat to seal gaps.
Fire rating / expansion: Fire resistance typically 30–120 minutes (flexible sheet TDS) with ~20:1–60:1 expansion noted; separate page mentions tested reports for 30’, 60’, 120’.
Use cases: Perimeter of fire‑rated doors, glazing gaps, penetrations, and expansion joints.
Key Notes:
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Expansion ratio determines sealing efficiency in fire – higher ratio recommended for larger gaps or higher fire ratings.
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Rigid INTUR is ideal for straight, high-use applications; Flexible INTUF fits complex profiles and retrofits.
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PVC encapsulation adds mechanical protection and aesthetic matching.
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Zero-halogen composition prevents toxic smoke.
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All products can be supplied fire-only or with cold smoke protection (brush/blade).
INTUR: Rigid Intumescent Fire Seal Strips
Wedge INTUR are Rigid types of Intumescent fire seals and most suitable for sever application where regular door maintenance is not possible. The PVC covering to the graphite intumescent seal protects from wearing out due to any mechanical damage to the seals. At Wedge we produce and supply different versions including fire only, fire & smoke, fire & acoustic, and fire & weather proof seals of Rigid Fire Seals depending on the end user requirements.
Features and Benefits
Durability: Wedge rigid PVC encapsulation protects the intumescent material from physical damage, moisture, and other environmental factors, ensuring a longer lifespan.
Aesthetics: Wedge PVC casing can be produced in various colors and finishes to match the decor of the building, making it less conspicuous compared to some other fire seal types.
Ease of Installation: These strips are typically easy to install with standard tools, and the rigid nature of the PVC casing helps to ensure a neat and secure fit.
Consistent Performance: The encapsulation helps maintain the integrity of the intumescent material, ensuring it performs consistently when exposed to fire.
Types of Rigid Intumescent Fire Seals
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Fire Protection Only: Applied when no threat of Smoke
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Fire & Smoke Protection with Brush: Protects against damages from Fire & Smoke.
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Fire & Smoke Protection single / twin blade: Protects against damages from Fire & Smoke
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Fire, Smoke, Acoustics, Weather Protection: Protection from fire, smoke, noise, heat, and water
INTUF: Flexible Intumescent Fire Seal Strips
Wedge INTUF are Flexible intumescent fire seals type of passive fire protection product, designed to expand when exposed to heat and seal gaps to prevent the spread of fire, smoke, and hot gases. Unlike rigid PVC encapsulated seals, flexible intumescent fire seals are made from materials that allow them to be more versatile in application and easier to install in irregular or complex shapes.
Features and Benefits
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Flexibility: Can be easily bent and shaped to fit around curves, corners, and irregular surfaces, making them suitable for a wide range of applications.
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Ease of Installation: Typically easier to install compared to rigid seals due to their flexibility.
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Effective Performance: Expands significantly when exposed to heat, creating a robust barrier against fire, smoke, and hot gases.
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Durability: Made from durable materials that maintain their integrity over time, even under varying environmental conditions.
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Zero halogen intumescent fire seals, Rubber free and do not generate any toxic smoke.
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Generates high expansion when exposed to fire or heat, Produces an excellent char structure to provide high integrity. Fire rating from 30 to 240 minutes.
FAQs – Intumescent Fire Seal Strips
Q1: What is an intumescent fire door seal?
A: A fire-rated strip that expands in a fire to seal gaps and block flames and smoke.
Q2: Are Wedge India seals NBC-compliant?
A: Yes – designed as per NBC India 2016 Part 4, Clause on Fire Doors.
Q3: Do you supply OEMs and distributors?
A: Yes – bulk pricing available for fire door manufacturers and hardware suppliers.
Q4: Can you customise size and colour?
A: Yes – custom extrusions available for project and OEM needs.
