Heat-Resistant Composite Structure
Fiberglass is widely used as the reinforcing substrate in high-temperature textile systems. The final usable temperature depends on the coating grade, exposure duration and finished-product design.
DERFLEX Technical Coated Fabric
Silicone Coated Fiberglass Fabric
Heat-resistant, flexible silicone rubber coated fiberglass fabric for insulation jackets, welding protection, expansion joints, fire curtains, thermal shields and OEM industrial fabrication.
DERFLEX supports single-side and double-side silicone coated fiberglass cloth with project-based weight, thickness, width, color, coating structure and roll specification. Selection should be based on the real service temperature, exposure time, abrasion, liquid contact, fabrication method and required test route—not on a single “temperature rating” alone.
DERFLEX product image. Final color, coating side, surface appearance, weight and roll format depend on the confirmed specification.
1 or 2 Sides
Silicone coating options
260–2000 g/m²
Common project direction
0.25–3.0 mm
Typical thickness direction
OEM Ready
Width, color, rolls & conversion
Material Definition
What Is Silicone Coated Fiberglass Fabric?
Silicone coated fiberglass fabric is a composite technical textile made by coating woven fiberglass cloth with silicone rubber on one side or both sides. The fiberglass substrate supplies dimensional stability, tensile support and heat-resistant reinforcement, while the silicone surface adds a more flexible protective layer with useful resistance to moisture, oils, outdoor weathering and repeated handling.
For industrial buyers, the important question is not simply whether a fabric is “silicone coated.” Performance changes with the fiberglass weave, yarn construction, coating amount, silicone formulation, number of coated sides, cured surface, total weight and finished-product geometry. A light curtain fabric and a heavy removable insulation jacket may therefore use very different constructions even though both are described by the same material name.
DERFLEX positions silicone rubber coated fiberglass fabric as a configurable roll material for converters, insulation product manufacturers, safety-product brands, expansion-joint fabricators, equipment-cover makers and engineering contractors who need repeatable bulk supply and a specification that matches the actual working environment.
Important specification note: heat resistance is not a universal number for every silicone
fiberglass grade. The silicone coating and the fiberglass substrate have different thermal limits.
Continuous temperature, short peak exposure, direct flame, radiant heat, molten splash and mechanical load
must be evaluated separately. Request the applicable technical data and test documents before use in a
safety-critical or regulated system.
Composite Structure
1
Top silicone layer
Protective surface for moisture, oil, abrasion and handling.
Protective surface for moisture, oil, abrasion and handling.
2
Woven fiberglass core
Provides dimensional stability and high-temperature reinforcement.
Provides dimensional stability and high-temperature reinforcement.
3
Optional reverse-side silicone
Selected when both faces need improved protection or cleanability.
Selected when both faces need improved protection or cleanability.
Performance Logic
Why Industrial Buyers Specify Silicone Fiberglass Cloth
The material is normally selected when heat exposure must be balanced with flexibility, handling durability, liquid resistance and the ability to fabricate a roll textile into blankets, jackets, curtains, connectors or shields.
Flexible Silicone Surface
Silicone rubber gives the fabric a more compliant surface than rigid sheet barriers, helping it wrap around pipes, valves, ducts, machinery and irregular equipment.
Water, Oil & Weather Resistance
The coated surface can improve resistance to water, oils, ozone and outdoor exposure. Actual chemical compatibility should be checked when acids, alkalis, fuels or process chemicals are involved.
Abrasion & Handling Support
Silicone coating helps protect the fiberglass surface during repeated folding, installation, removal and contact with adjacent equipment, which is valuable for reusable industrial covers.
Single or Double Side Design
One-side coating can reduce weight and preserve flexibility where exposure is directional. Double-side coating can provide more balanced surface protection for repeated-use products.
Converter-Friendly Supply
Roll goods can be cut, sewn, punched, wrapped, grommeted and assembled into insulation jackets, curtains, safety barriers and flexible connector systems after the fabrication process is validated.
Specification Direction
Silicone Coated Fiberglass Fabric Specifications
The ranges below are practical purchasing directions rather than universal values for every grade. Final parameters should be confirmed through an approved sample, technical data sheet and any required test method.
| Product Name | Silicone Coated Fiberglass Fabric / Silicone Coated Fiberglass Cloth / Silicone Rubber Coated Glass Fabric |
|---|---|
| Base Substrate | Woven fiberglass cloth; E-glass or project-matched fiberglass construction depending on strength, flexibility and heat requirement. |
| Coating Structure | Silicone rubber on one side or both sides; coating weight and surface feel can be adjusted by grade. |
| Weight Direction | Approx. 260–2000 g/m² for common industrial programs; lighter or heavier structures can be reviewed. |
| Thickness Direction | Approx. 0.25–3.0 mm depending on base cloth and silicone loading. |
| Common Widths | 1000 mm / 1200 mm / 1500 mm are common directions. Other widths are subject to product structure, equipment route and order plan. |
| Color Direction | Red, grey, black, white, yellow and custom color direction according to formulation and order quantity. |
| Temperature Selection | High-temperature grade. Many industry silicone-coated constructions are specified around 230–287°C for continuous silicone-surface exposure, while the fiberglass substrate can tolerate higher temperatures. The exact continuous and short-term limit must be confirmed for the selected grade. |
| Surface / Finish | Smooth or textured direction, one-side / double-side coating, matte appearance, project-specific coating weight and optional further processing. |
| Supply Format | Roll goods, cut pieces, slit widths and OEM fabricated direction depending on project requirements. |
| Typical Fabrication | Cutting, sewing, punching, grommeting, wrapping, blanket making, curtain making, jacket fabrication and flexible connector assembly. |
Grade Selection
Choose the Construction by Finished Product Duty
Instead of treating every silicone coated glass fabric as interchangeable, define the required balance of drape, mechanical durability, coating protection and finished-product thickness.
Lightweight Protective Grade
Considered when low bulk, easier folding and fabric drape are more important than heavy abrasion duty.
- Flexible curtains and partitions
- Light thermal covers
- Directional heat shielding
- Converter projects requiring easier sewing
Industrial General-Purpose Grade
A balanced structure for buyers who need a practical combination of coating coverage, handling strength and fabrication flexibility.
- Removable insulation jackets
- Welding curtains and shields
- Equipment protection covers
- Duct and connector components
Higher-Weight Protective Grade
Considered when thicker structure, stronger surface protection and repeated handling matter more than minimum weight.
- Heavy insulation covers
- Expansion-joint outer layers
- Repeated-use safety blankets
- Industrial barriers exposed to abrasion
Single-Side Coating
Use One Coated Face When Exposure Is Directional
A single silicone-coated face can be a practical route when one side faces moisture, oil, weathering, abrasion or process exposure while the reverse side can remain closer to the original fiberglass surface.
- Lower coating mass than comparable two-side constructions
- Can preserve a more flexible or lighter structure
- Useful for wraps, liners and directional protective layers
- May provide a more economical specification when two coated surfaces are not needed
- Final sewing and edge design should account for the uncoated face
Double-Side Coating
Use Two Coated Faces for More Balanced Surface Protection
Double-side silicone coating is often considered for reusable industrial components that are folded, removed, cleaned or exposed from either side.
- Improved surface protection on both faces
- Useful for insulation jackets and frequently handled blankets
- Can simplify wipe-down and improve handling consistency
- Suitable for products where either face may contact moisture or oil
- Higher coating weight may affect stiffness, thickness and cost
Application Mapping
Where Silicone Coated Fiberglass Fabric Is Used
Application design should determine the grade. The same roll specification should not automatically be used for a welding curtain, a turbine jacket and a fabric expansion joint without reviewing the different thermal and mechanical loads.
Removable Insulation Jackets
Outer fabric for removable jackets around valves, flanges, turbines, exhaust systems, pumps and process equipment where maintenance access is required.
Welding Blankets & Curtains
Used in converted blankets, curtains and temporary shields for sparks, spatter and radiant heat. Suitability depends on welding process and exposure intensity.
Expansion Joints
Flexible outer or functional layer in fabric expansion joints that accommodate vibration, thermal movement, airflow and industrial exposure.
Flexible Duct Connectors
Helps create flexible connections between duct sections and equipment where heat, vibration, moisture and movement occur together.
Fire Curtains & Barriers
Can be part of a fire-resistant curtain or barrier assembly after the complete system design, fabric grade and required test route are validated.
Thermal Shields & Covers
Flexible protection for machinery, pipes, cylinders and nearby components where rigid insulation panels are impractical or need removable access.
Power, Metallurgy & Chemical Sites
Used in protective textile assemblies for high-temperature equipment areas. Chemical compatibility must be reviewed against the actual process media.
Converted Technical Textile Products
Roll supply for distributors and manufacturers developing custom covers, jackets, curtains, barriers, sleeves, pads or industrial safety products.
Material Comparison
Silicone vs PTFE vs PU vs Uncoated Fiberglass
Coating chemistry changes the way fiberglass behaves in real processing and protection applications. Use the comparison below as a selection framework, then confirm the exact grade with samples and technical data.
| Selection Factor | Silicone Coated Fiberglass | PTFE Coated Fiberglass | PU Coated Fiberglass | Uncoated Fiberglass |
|---|---|---|---|---|
| Primary Strength | Flexible protective surface, heat direction, abrasion and moisture resistance | Low-friction release, non-stick behavior and chemical-facing process use | Lighter coating route for selected heat, abrasion and handling requirements | Heat-resistant reinforcement without a polymer protective surface |
| Surface Feel | Elastomeric, grippy, flexible | Smoother and lower friction | Varies from soft to firmer depending on formulation | Textile / glass yarn surface |
| Moisture / Oil Protection | Useful direction for coated protective products | Strong chemical and release direction for many process applications | Application dependent | Limited without further treatment |
| Typical Product Direction | Jackets, blankets, curtains, connectors, expansion joints | Release sheets, heat-sealing covers, belts, process liners | Protective covers, lighter coated heat-resistant components | Base cloth, reinforcement, general heat barrier layer |
| Fabrication | Cutting, sewing, wrapping and assembled textile products | Cut sheets, belts, tapes, release layers and precision process parts | Cutting and sewing depending on coating system | Cutting / sewing with more exposed fibers |
| Best Choice When… | Heat exposure must be balanced with flexible handling and surface durability | Release, low friction and chemical resistance are the dominant requirements | A lighter or different polymer coating balance is required | The application mainly needs fiberglass reinforcement and can tolerate an uncoated surface |
Quality Control
What Should Be Checked Between Sample and Bulk Production?
For a coated technical textile, the approved sample should become a practical reference for more than color. Buyers should agree on the parameters that affect converting performance and finished-product consistency.
01
Weight & Thickness
Confirm target values, tolerance method and whether the measurement includes the full coated composite.
02
Coating Uniformity
Check silicone distribution, bare spots, pinholes, surface defects and consistency across the usable roll width.
03
Width, Roll Length & Edge Condition
These directly affect cutting yield, automated feeding, seam planning and material consumption.
04
Mechanical & Thermal Validation
Use the relevant test method for tensile, tear, flame behavior, thermal exposure or other project-specific requirements.
05
Fabrication Trial
Cut, sew, punch, wrap or assemble the sample using the same method planned for production before approving a bulk program.
Why DERFLEX
Manufacturing Support for Technical Coated Fabric Buyers
DERFLEX has more than 20 years of experience in coated and flexible industrial textile manufacturing. The company supports distributors, converters, OEM brands, contractors and industrial buyers with material selection, coating and lamination capability, sample coordination, production control and export service.
For silicone coated fiberglass fabric, the buying value is the ability to discuss the complete specification: base cloth, coating side, coating amount, weight, thickness, width, color, roll size, packaging and final conversion. This helps move the conversation from a generic product name to an application-ready material program.
Application-based specification discussion
Single / double side coating direction
Custom width, weight, thickness & color
Roll supply and OEM conversion support
Batch-oriented quality control
Export packaging & repeat-order records
Related DERFLEX Resources
Continue Material Selection with Related Technical Fabric Pages
These six internal resources help buyers compare adjacent high-temperature, fiberglass and coated-fabric directions.
FAQ
Silicone Coated Fiberglass Fabric FAQs
Practical answers for procurement teams, engineers, converters and industrial fabric buyers.
What is silicone coated fiberglass fabric used for?
It is commonly used for removable insulation jackets, welding blankets and curtains, expansion joints, flexible duct connectors, fire-resistant barriers, thermal shields, equipment covers and other converted industrial textile products that require heat-resistant reinforcement with a flexible coated surface.
What temperature can silicone coated fiberglass fabric withstand?
There is no single correct temperature for every grade. Many industry silicone-coated constructions are specified around 230–287°C for continuous exposure at the silicone surface, while fiberglass itself can tolerate higher temperatures. Peak temperature, direct flame, exposure time, pressure and finished-product design can change suitability. Confirm the exact DERFLEX grade by technical data and application testing.
Is silicone coated fiberglass fabric fireproof?
The term “fireproof” can be misleading. Fiberglass is a heat-resistant reinforcement and silicone-coated constructions can be developed for flame-resistant or fire-retardant applications, but performance depends on the exact material and test method. For a fire-rated system, request the relevant report for the selected grade and validate the complete finished assembly.
Should I choose single-sided or double-sided silicone coating?
Single-side coating is useful when exposure mainly comes from one direction and lower weight or greater flexibility is preferred. Double-side coating is often selected when both surfaces need better moisture, oil, abrasion or handling protection, especially for reusable jackets, blankets and covers.
Is silicone coated fiberglass fabric waterproof?
The silicone coating can provide strong water resistance at the material surface. The waterproof performance of a finished product still depends on coating continuity, seams, needle holes, edges, joints and assembly design. If the finished article must hold water or resist hydrostatic pressure, request a specific test requirement.
Can DERFLEX customize silicone coated fiberglass cloth?
DERFLEX can discuss project-based customization for base fiberglass structure, coating side, coating weight, total weight, thickness, roll width, color, roll length, packing and OEM conversion direction. Availability depends on the required specification and order plan.
What information should I send for a quotation?
Send the finished application, continuous and peak temperature, heat-source distance, flame or spark exposure, required weight or thickness, width, coating side, color, roll length, quantity, fabrication method, chemical contact and any required test standard. A drawing or existing sample is useful for OEM projects.
How is silicone coated fiberglass different from PTFE coated fiberglass?
Silicone coated fiberglass is commonly chosen for flexible protective products where grip, drape, abrasion resistance and moisture protection matter. PTFE coated fiberglass is often chosen for low-friction, non-stick release and chemical-facing process applications such as heat-sealing covers, conveyor belts and release sheets.
Request a Silicone Coated Fiberglass Fabric Specification
Tell DERFLEX your application, temperature range, coating side, weight or thickness, width, color, quantity, fabrication method and required test route. The team can then review a practical sample and quotation direction.
Product values on this page are selection references. Final performance, tolerances, test standards and suitability must be confirmed for the ordered grade and finished application, especially for fire-safety, high-risk or regulated projects.