DERFLEX supplies silicone coated fiberglass fabric for removable insulation jackets, thermal blankets, valve and flange covers, pipe insulation covers and OEM heat-protection products. The material can be matched by base cloth, silicone coating side, weight, thickness, width, color and fabrication method so converters can select around the finished jacket—not around a generic fabric label.
Temperature capability belongs to the exact composite grade and finished jacket design. For high-risk or regulated applications, confirm the approved technical data, test method and end-use validation before bulk production.
A removable insulation jacket is a layered system. The visible fabric is important, but it should be selected together with the insulation core, inner facing, sewing thread, fastening design and the temperature at each layer. Treating every layer as “high-temperature fabric” can lead to over-specification in one area and under-performance in another.
For many industrial jackets, silicone coated fiberglass fabric is used on the outer or cold face because it combines a dimensionally stable glass-fiber textile with a coated surface that is easier to handle, wipe and fabricate than bare fiberglass. One-side coating can suit directional exposure or lighter constructions, while two-side coating is often evaluated when both surfaces benefit from added protection and cleanability.
The hot face can require a different construction if it sits close to a high surface temperature. The correct choice depends on whether the jacket covers steam piping, exhaust components, turbines, process valves or lower-temperature HVAC equipment. This is why DERFLEX asks for both the operating temperature and the fabric’s actual position inside the jacket.
Removable jackets are handled differently from permanent insulation. They are opened for inspection, folded back, reinstalled and exposed to maintenance environments. The outer fabric therefore needs more than thermal resistance alone.
A coated woven fiberglass structure can be cut, draped and sewn into valve covers, flange covers, pipe jackets and irregular equipment shapes. Fabric weight and coating loading should be matched to the sewing process and required bend radius.
The silicone surface helps protect the glass-fiber reinforcement from moisture, oil mist and general industrial contamination. Finished-jacket water resistance still depends on seams, stitching, overlaps and closure design.
Maintenance teams may remove jackets many times during inspections. Coating structure, fabric weight and reinforcement should therefore be chosen with folding, pulling, fastening and surface abrasion in mind.
Compared with uncoated fiberglass cloth, a silicone surface can reduce direct contact with loose glass fibers and provides a surface that is generally easier to wipe during fabrication and maintenance.
The woven fiberglass base provides dimensional support for panels, flaps, cut-outs and fastening zones. Exact tear, tensile and puncture performance should be confirmed by selected construction and test data.
One-side or two-side silicone, different coating weights, colors, widths and surface directions can be discussed for OEM production, distributor programs and insulation jacket converters.
The values below are practical selection ranges published for DERFLEX silicone coated fiberglass fabrics, not a single universal grade. Final parameters should be confirmed on the selected sample, technical data sheet and required test method.
| Specification Item | Typical DERFLEX Direction | Why It Matters for Insulation Jackets |
|---|---|---|
| Base Fabric | Woven fiberglass cloth; E-glass or project-specific fiberglass substrate. | Controls dimensional stability, textile strength, drape and the heat capability of the reinforcement. |
| Coating | Silicone rubber on one side or both sides; FR direction can be discussed by project. | Influences cleanability, surface protection, flexibility, water/oil exposure and handling during conversion. |
| Total Weight | Approx. 260–2000 g/m² common project range; other constructions can be reviewed. | Lighter fabrics can improve drape; heavier constructions may be considered for larger covers or more demanding handling. |
| Thickness | Approx. 0.25–3.0 mm depending on base cloth and silicone loading. | Affects stiffness, seam bulk, abrasion behavior, foldability and how the jacket fits around irregular geometry. |
| Common Widths | 1000 mm, 1200 mm and 1500 mm; other widths depend on grade, route and order quantity. | Width affects cutting yield, panel layout, seam count and fabric consumption for larger insulation covers. |
| Temperature Direction | Selected silicone-coated grades are often used around approximately 260°C continuous service; confirm exact grade data. | The coating can be the limiting layer even when the fiberglass reinforcement itself tolerates higher temperatures. |
| Color / Surface | Grey, red, black, white, yellow and customized color directions; smooth or textured options depend on grade. | Color may support visual coding, appearance requirements or OEM product lines; surface affects handling and cleaning. |
| Supply Form | Roll goods, cut pieces and selected conversion directions by project. | Lets fabricators align material format with nesting, cutting, sewing and production workflow. |
*Ranges are for specification discussion only. They are not a guarantee that every combination is available or suitable for every end use.
A useful specification describes what the jacket will experience after installation. The same “17 oz silicone cloth” or “high-temperature fiberglass fabric” label may not capture differences in equipment temperature, outdoor exposure, oil mist, removal frequency or panel geometry.
| Jacket Application | Fabric Direction Often Considered | Questions to Confirm Before Ordering |
|---|---|---|
| Valve & Flange Covers | Flexible silicone coated fiberglass, often with two-side coating for reusable handling. | Surface temperature, valve geometry, removal frequency, oil/steam exposure, closure method and seam layout. |
| Steam Pipe & Steam Trap Jackets | Silicone-coated outer fabric with weight selected around panel size and maintenance handling. | Continuous temperature, condensation risk, outdoor exposure, contact distance from hot surface and insulation thickness. |
| Turbine / Exhaust Insulation | Outer silicone fabric may be suitable, while the hot-face layer may require a different high-temperature construction. | Peak surface temperature, radiant heat, vibration, hot spots, direct contact, airflow and shutdown/startup cycle. |
| Chemical Process Equipment | Silicone-coated glass for general industrial exposure; PTFE-coated glass may be compared where chemical resistance or release behavior is a priority. | Chemical identity, concentration, splash vs immersion, cleaning media, temperature and required documentation. |
| Outdoor Equipment Covers | Two-side silicone coating may be considered when rain, humidity and repeated cleaning are expected. | UV exposure, drainage, seam design, water paths, wind movement, fasteners and maintenance interval. |
| Hot-Work / Fire-Risk Areas | FR silicone-coated fiberglass direction with project-specific test requirements. | Required EN, DIN, ASTM, NFPA, GB or customer test method; spark, flame or molten-splash exposure; finished-product approval route. |
Removable insulation covers are generally chosen where equipment needs thermal protection but also requires access for inspection, service, calibration or repair.
Custom covers around irregular connection points that may need frequent maintenance access.
Reusable jackets for steam distribution systems where heat-loss control and serviceability are both considered.
Fabric systems shaped around housings and service zones, with vibration and repeated removal considered in the design.
Removable blankets around equipment that requires thermal management and periodic inspection.
Flexible thermal covers where the hot-face and outer-face materials may need different temperature capabilities.
Coated technical textiles for maintenance-intensive locations subject to heat, moisture, oil mist and general plant contamination.
Material directions for compact equipment spaces where access, surface protection and project-specific fire requirements may apply.
Roll supply for converters producing branded removable jackets, thermal pads and custom equipment covers.
A more useful RFQ separates the material name from the operating conditions. That improves sample relevance and makes supplier comparison more meaningful.
The coating can have a lower continuous-temperature limit than the woven glass substrate. Specify the complete composite and exposure condition.
A coated fabric may resist water, while needle holes, seams, closures and overlaps remain possible water paths in the finished jacket.
Two fabrics with similar g/m² can differ in weave, coating amount, surface feel, flexibility, thickness and fabrication behavior.
Large access flaps, sharp corners, straps and frequent removal can create stress that should be considered before selecting a light fabric.
Roll width affects panel nesting, seam count and waste. A slightly different width may improve material utilization for standardized jacket sizes.
Fire, flame, smoke and thermal test methods are not equivalent. State the required standard and acceptance criteria before sample approval.
The correct fabric depends on the role it plays in the insulation system. Silicone-coated fiberglass is a common direction for removable jacket outer layers, but other coated textiles may be more appropriate when release behavior, chemicals, direct hot-face exposure or different fabrication requirements dominate.
| Material Direction | Why Buyers Consider It | Typical Fit in Insulation Products | Selection Caution |
|---|---|---|---|
| Silicone Coated Fiberglass | Flexible coated surface, water/oil resistance direction, abrasion support and sewing compatibility. | Outer/cold face of removable jackets, blankets, valve covers and flange covers. | Confirm silicone composite temperature, coating side and the finished-jacket water-path design. |
| FR Silicone Coated Fiberglass | Additional flame-retardant direction for projects requiring a specified test route. | Industrial jackets used near hot-work zones, safety barriers or applications with defined fire requirements. | Use the exact test method and approved grade; “fire resistant” is not a single universal rating. |
| PTFE Coated Fiberglass | Low-friction/release surface and strong resistance to many chemicals. | Selected outer layers or specialized industrial covers where chemical exposure or clean release matters. | Confirm flexibility, sewing behavior, required surface finish and actual chemical/temperature combination. |
| PVC Coated Fiberglass | Waterproofing and coated-fabric handling for selected protective or fireproof applications. | Lower-temperature protective covers or other fabricated industrial products, depending on formulation. | Generally not selected where silicone/PTFE-level heat exposure is required; validate the exact compound. |
| Bare / Specialty High-Temp Fiberglass | High-temperature textile reinforcement without an elastomeric silicone surface. | Possible hot-face or internal layer direction where the specific temperature and abrasion conditions allow. | Handling, fiber release, abrasion, chemical exposure and direct-contact conditions require separate review. |
The faster route to a useful sample is a compact operating-condition brief. Send the following information with your quotation request.
Valve, flange, pipe, turbine, pump, exhaust, heat exchanger or other equipment; outer face or hot face.
Normal operating temperature, peak temperature, direct-contact condition and distance from the heat source.
Indoor/outdoor, rain, oil mist, steam, chemical splash, UV, abrasion, vibration and cleaning method.
Target weight or thickness, one- or two-side coating, color, surface direction and roll width.
Sewing method, closures, cut pieces, packing, required test standard, quantity and delivery destination.
For insulation jacket manufacturers, a successful sample is only the first step. Bulk production also needs controlled roll appearance, coating consistency, dimensional checks, packing and a clear record of the approved specification.
DERFLEX publishes more than 20 years of industrial coated-fabric manufacturing experience and supports project discussion around coating side, weight, thickness, color, width, roll length and OEM packing. The practical advantage is the ability to connect the fabric specification to the converter’s actual cutting and sewing process before moving into repeat supply.
For jacket producers and industrial distributors, DERFLEX can review operating conditions first, prepare a material direction, support sample evaluation and then confirm the parameters required for bulk rolls. Exact performance remains subject to the approved grade, test evidence and finished-product design.
Application, temperature, coating side, weight, width and fabrication method are reviewed together.
Color, roll width, roll length, thickness and packing can be discussed for OEM and distributor programs.
Selection considers cutting, sewing, folding, grommeting and the repeated-use nature of removable jackets.
Bulk purchasing can be coordinated around packing, labeling, documentation and repeat-order specification records.
Use these related pages to compare coated fiberglass constructions, fire-retardant directions and broader industrial textile supply options.
Concise answers for sourcing teams, jacket manufacturers and industrial project engineers.
Silicone coated fiberglass fabric is commonly considered for the outer or cold face of removable insulation jackets because the woven fiberglass provides dimensional support while the silicone surface improves handling, flexibility, water and oil resistance direction, and cleanability. The hot face may require a different material depending on the equipment surface temperature.
Yes, it is widely used as a fabric direction for removable valve, flange, pipe and equipment jackets. The correct grade should be selected according to continuous and peak temperature, coating side, jacket geometry, removal frequency, oil or steam exposure, and the finished cover design.
Selected DERFLEX grades are often used around approximately 260°C continuous service, but there is no single universal temperature for every construction. Fiberglass reinforcement and silicone coating have different thermal limits, so the exact grade, contact method, exposure time, airflow and finished-jacket design must be confirmed.
One-side coating can be considered when exposure is directional, coating weight should be reduced or higher drape is useful. Two-side coating is often evaluated for removable jackets when both surfaces need easier cleaning, environmental protection or more uniform handling. Final selection depends on the jacket structure and budget.
The silicone coating improves water resistance, but the waterproof performanc, e of a finished insulation jacket also depends on sewing holes, seams, overlaps, closures, drainage and fabrication details. For outdoor service, evaluate the complete jacket rather than the fabric alone.
DERFLEX can discuss custom base cloth, silicone coating side, total weight, thickness, color, width, roll length, surface direction, packing and selected conversion formats. Feasibility and minimum production quantity depend on the requested construction.
Silicone-coated fiberglass is often selected for flexible, sewable removable covers needing water/oil resistance and reusable handling. PTFE-coated fiberglass may be considered when chemical resistance, low friction or release behavior is more important. Compare both against temperature, sewing, flexibility, cleaning and chemical exposure requirements.
Send the equipment or finished-jacket type, outer-face or hot-face position, continuous and peak temperature, environmental exposure, coating side, target weight or thickness, width, roll length, color, quantity, sewing or fabrication method, required test standard and delivery destination.
Tell DERFLEX the equipment, operating temperature, fabric layer position, coating preference, width, weight or thickness, quantity and required test route. The team can review a practical fabric direction for sampling and quotation.