How is the fire seal installed?

The rigid strip is normally installed in a routed groove in the door leaf or frame. The groove dimensions should match the selected profile. Please send us your door section drawing or groove dimensions so that we can recommend the appropriate size.

Can you manufacture customized profiles?

Yes. We provide OEM and ODM services and can customize the thickness, width, length, color, casing profile and expansion formulation. Production can be based on your technical drawing or physical sample.

Can I obtain samples before placing a bulk order?

Yes. Free samples are available for product and dimensional evaluation; the customer only needs to cover the shipping cost. Standard production lead time is approximately 15-20 days after order confirmation, depending on quantity and customization requirements.

Durable Fire-Resistant Sealing Strip for Effortless Surface Application

Name: Durable Fire-Resistant Sealing Strip for Effortless Surface Application
Brand: Foshan Nanhai Chongtai Fire-Proof Material Co., Ltd.
SKU: 2134453342

Guangdong, ChinaFoshan Nanhai Chongtai Fire-Proof Material Co., Ltd.

US$1.80

1,000 PCS

Product specifications

4 x 25 mm

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Material

PVC and Expanded Graphite

Usage

Doors & Windows

Model NO.

FQ-CD

Type

Rigid Intumescent Fire Seal

Sectional Shape

Customized

Performance

Fire and Smoke Sealing

Vulcanization

Continuous Vulcanization

Standard

Standard, Nonstandard

Product Name

Rigid Intumescent Fire Seal Strip

Application

Timber and Steel Fire Door Assemblies

Thickness

4.0 / 6.0 mm

Width

10-60 mm, Customizable

Length

2000-2400 mm, Customizable

Material Composition

Expanded Graphite Core with Rigid PVC Casing

Expansion Ratio

15-20× Standard; 20-30× Customized

Activation Temperature

Approx. 180°C

Test

En 1634-1 / UL 10c / As1530

MOQ

1000 PCS

Color

Brown, Black and Custom Colors

Sample Lead Time

7 Days

Lead Time

15-20 Days

Cross-Section Shape

Customized

Transport Package

Carton

Trademark

FAN QIU

Origin

China

HS Code

3916909000

Key features

Customizable Dimensions: Available in 4.0 mm and 6.0 mm thicknesses, widths from 10 mm to 60 mm, and lengths from 2000 mm to 2400 mm.

Heat-Activated Expansion: Begins to activate at approximately 180 degree Celsius and expands around 15-20 times to help seal fire-door gaps.

Custom Expansion Formulation: Expansion ratios of approximately 20-30 times can be produced according to specific project requirements.

Rigid Protective Structure: A durable PVC casing protects the expanded graphite intumescent core and supports clean groove installation.

Tested Fire Performance: Evaluated in fire-door assemblies according to EN 1634-1 with EI 132 minutes and UL 10C with 90 minutes in the tested configurations.

For Timber and Steel Fire Doors: Suitable for recessed installation in routed grooves in fire-door leaves and frames.

OEM and ODM Support: Dimensions, colors, profiles and formulations can be customized from customer drawings or physical samples.

Sample and Production Support: Free samples are available with shipping paid by the customer. Standard production lead time is approximately 15-20 days.

Company profile

Flexible CustomizationStandardized quality controlStandardized Supplier ManagementCustomization from Samples

Foshan Nanhai Chongtai Fire-Proof Material Co., Ltd.

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 16 Years CertifiedNearest Port: Guangzhou Port, Shenzhen PortAverage Response Time: ≤2.56h

AI-Powered supplier vetting

SummaryThe supplier operates in rail transit, high-speed rail equipment and accessories, new energy technologies, technical glass, fireproof sealing materials, and related special equipment. It reports extensive customization capability, OEM service for recognized brands, standardized finished-product inspection, and multiple quality, environmental, occupational-health, fire-protection, and EU certifications. Its company description states that it has served nearly a thousand major enterprises and achieved an average annual order delivery rate above 98%. However, the provided information indicates no valid manufacturing-capacity contract with an affiliated subcontractor, no inventory, overseas warehouse, overseas showroom, overseas agent or branch, or offline trade-show participation. Financial credibility cannot be assessed because the supplied financial fields contain zero values and no reliable supporting explanation.

Supplier typeThe supplier is positioned as a seller and developer of rail transit and high-speed rail equipment, rail transit green composite materials, new energy prime movers and technologies, technical glass, fireproof sealing materials, and special equipment. The scope indicates an industrial equipment and component supplier with research and development activities, rather than a general trading-only business.

CertificationsThe supplier reports ISO9001:2015, ISO14001, ISO45001, EU CE certification, 17 fire-protection product certificates issued by the Ministry of Emergency Management Fire Assessment Center, and more than 20 EU fire-resistant material certificates. This is explicit evidence of broad quality, environmental, occupational-health, fire-product, and EU compliance certification.

R&D capabilityThe supplier describes its products as innovative and offers research and development activities in emerging energy technologies and nuclear-power equipment assembly and engineering technology. It also supports customization and OEM services, but reports no available SDK; the evidence supports product and engineering innovation activity without establishing a complete software-development capability.

Customization capabilityThe supplier explicitly offers flexible customization, minor customization, full customization, customization from customer designs, and customization from samples. Its description also states that products can be customized according to actual needs, providing direct evidence of broad customization capability.

Client casesThe supplier states that it has long served nearly a thousand major enterprises and reports OEM service for recognized brands. It also cites extensive fire-protection and EU fire-resistant material certifications, but no specific customer names, project descriptions, or independently verifiable case details are provided.

Product Q&A

Q:What is this rigid intumescent fire seal used for?

It is designed for installation in the grooves of timber or steel fire doors and door frames. When exposed to high temperatures, the intumescent core expands to help seal gaps and restrict the passage of fire and smoke.

Q:What sizes are available?

Standard thicknesses are 4.0 mm and 6.0 mm. Widths from 10 mm to 60 mm and lengths from 2000 mm to 2400 mm are available. Other dimensions and cross-sectional profiles can be customized for specific door systems.

Q:At what temperature does the fire seal begin to expand?

The intumescent material begins to activate at approximately 180 degree Celsius. The actual activation behavior may vary slightly depending on the selected formulation and application conditions.

Q:What is the expansion ratio?

The standard formulation expands approximately 15-20 times when exposed to heat. Customized formulations with expansion ratios of approximately 20-30 times are available upon request.

Q:Which fire-test standards are available?

The seal has been evaluated as part of fire-door assemblies. The tested configuration achieved EI 132 minutes according to EN 1634-1 and 90 minutes according to UL 10C. Relevant test documents can be provided for project review.