Superior heat resistance, exceptional durability, and reliable fire protection​ – our glass fiber fireproof sewing thread is engineered to meet the most demanding industrial challenges. Whether you manufacture protective gear, high-temperature filters, or insulation materials, our specialized sewing thread delivers unmatched performance in extreme conditions.

Product Overview

Our glass fiber sewing thread is crafted from premium inorganic E-grade alkali-free glass fibers, treated with advanced surface coatings including PTFE for enhanced functionality

This specialized construction results in a sewing thread that maintains integrity when others fail, offering a combination of thermal resistance, mechanical strength, and flame retardancy that organic fibers simply cannot match.

Key Features and Benefits

Exceptional Heat Resistance: Withstand continuous temperatures of 280-600°C, and momentary exposure up to 1700°C, making it ideal for high-temperature applications

Certified Fire Protection: Achieves A-level non-combustible certification according to GB8624-2006 and German DIN4102 A1 standards, ensuring complete fire safety

Superior Durability: High-tensile strength (up to 8kgf breaking strength) and excellent abrasion resistance guarantee long-lasting performance in rigorous industrial environments

Chemical and Environmental Resistance: Immune to corrosion, moisture, mildew, and UV exposure, maintaining performance in diverse working conditions

Smooth Sewing Performance: Specially engineered for high-speed industrial sewing machines without fraying or twisting issues, ensuring clean stitches and efficient production

Technical Specifications

Parameter​

Specification​

Material Composition​

E-grade alkali-free glass fiber with PTFE coating

Temperature Resistance​

Long-term: 280-600°C; Short-term: up to 1700°C

Diameter Options​

0.3mm to 5.0mm available

Standard Colors​

Natural (milk white), also available in black, dark blue

Certifications​

GB8624-2006 A-level, DIN4102 A1

Tensile Strength​

73.5N (7.5kgf) to 88.3N (9.0kgf)

Applications Across Industries

Protective Equipment Manufacturing

Firefighting blankets and curtains

Industrial protective gloves and clothing

Welding protection equipment

High-temperature aprons and shields

Filtration Systems

High-temperature filter bags for industrial dust collection

Smoke filtration systems

Chemical filtration applications

Electrical and Insulation Products

Cable wrapping and insulation

Heating element construction

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Electrical insulation materials

Industrial Components

Rubber hose reinforcement

High-temperature tape and belt manufacturing

Sealing and gasket production

Why choose Our Glass Fiber Sewing Thread?

Consistent Quality Assurance: Our manufacturing process undergoes strict quality control to ensure every batch meets exacting standards for diameter consistency, tensile strength, and thermal performance.

Global Compliance: Certified to meet international safety and quality standards, making our products suitable for worldwide distribution and application.

Technical Support: Backed by extensive application expertise—we provide comprehensive technical support to help you select the perfect thread for your specific requirements.

Customization Options: Available in various diameters, colors, and packaging configurations to match your production needs exactly

Elevate Your Products With Unmatched Fire Protection

Don't compromise on safety or performance. Our glass fiber fireproof sewing thread provides the critical thermal protection your products need to perform reliably in extreme conditions.

Contact us today​ to request samples, technical data sheets, or personalized quotations. Discover why leading manufacturers worldwide trust our high-temperature sewing solutions for their most challenging applications.