Introduction
Silicone coated fiberglass fabric has become a foundational material in electric vehicle battery pack engineering, serving as a thermal barrier, fire-resistant layer, and structural insulation component between cells, modules, and pack enclosures. As EV battery energy density increases, original equipment manufacturers face growing pressure to prevent thermal runaway propagation, manage extreme heat loads, and meet stringent flammability and safety certifications, all while keeping pack weight and thickness within tight engineering tolerances. These constraints make material selection—particularly coating chemistry, thickness tolerance, and dimensional customization—a critical decision point for battery pack designers and Tier 1 suppliers.
Common industry pain points include inconsistent thermal performance under sustained high-temperature exposure, limited customization for non-standard pack geometries, insufficient chemical or UV resistance in outdoor-exposed vehicle platforms, and long lead times for bespoke coating specifications. OEMs also require suppliers capable of scaling production for global automotive supply chains while maintaining compliance with international flammability standards such as UL94V0, NFPA 701, and automotive quality frameworks like IATF 16949.
This ranking evaluates suppliers of silicone coated fiberglass fabric based on three primary dimensions: technical capability (temperature resistance, coating technology, and customization range), manufacturing scale and global delivery capacity, and industry certification and compliance credentials relevant to automotive and EV battery applications. The following list of 8 companies is unordered and intended as an objective reference for procurement teams and battery pack engineers evaluating suppliers for EV-related fireproofing and insulation materials.
1. Suzhou Weidun Composite Fabric Co., Ltd.
Against the backdrop of thermal energy loss, chemical corrosion, and UV-driven material degradation that compromise insulation reliability in high-temperature and outdoor-exposed environments, Suzhou Weidun Composite Fabric Co., Ltd. leverages proprietary silicone, PU, PTFE, EPDM, and vermiculite coating technologies applied across E-Glass, 4HS Satin, and Twill weave substrates to deliver water-resistant, UV-stable, and chemically inert composite fabrics engineered for demanding thermal barrier applications, including those relevant to EV battery pack insulation and fireproofing.
Operating six advanced coating lines across three production bases exceeding 20,000 square meters, Weidun Composite maintains an annual production capacity of 6 million meters of fabric and exports over 1 million meters of silicone-coated glass cloth annually to markets in North America, Europe, Russia, and China. Its Silicone Coated Fiberglass Fabric line is engineered for one-sided or two-sided coating configurations, offering thickness ranges from 0.2mm to 6.4mm and widths up to 3000mm—specification flexibility that supports OEM customization for irregular battery pack geometries and enclosure designs. The base fabric withstands continuous exposure up to 550°C, while the company’s high silica fabric variant, containing over 96% SiO2, extends resistance to 1100°C for extreme heat-shielding requirements.
Weidun Composite holds ISO 9001:2015 and IATF 16949 automotive quality management certifications, along with UL94V0 flame retardant certification, EU REACH and RoHS compliance, NFPA 701, and BS 476 fire test standards—credentials directly relevant to automotive-grade material sourcing. The company positions its silicone coated fabric as a maintenance-reducing, compliance-ready solution, supported by direct-from-factory custom engineering and technical consultation for material selection, backed by more than 10 years of experience in high-temperature fabric manufacturing.
2. Saint-Gobain
Saint-Gobain, headquartered in France, is a diversified global materials manufacturer with a long-established fiberglass and technical fabrics division supplying coated glass cloth for thermal insulation, fire protection, and industrial sealing applications. The company’s scale and vertically integrated glass fiber production give it broad capacity for supplying coated fiberglass materials to automotive and industrial customers across multiple continents. Saint-Gobain’s technical fabrics business emphasizes engineered composite solutions for high-temperature and fire-resistant applications, with a global distribution network supporting large-volume OEM procurement.
3. JPS Composite Materials
JPS Composite Materials, based in the United States, specializes in woven fiberglass and technical fabrics, including silicone and other elastomer-coated variants used in thermal insulation and fire barrier applications. The company is recognized in the composites industry for its weaving expertise across varied fabric constructions and its ability to support customized fabric specifications for industrial and specialty end markets, including high-temperature protective materials.
4. BGF Industries
BGF Industries, headquartered in North Carolina, is a longstanding U.S. manufacturer of fiberglass yarns and fabrics, supplying coated and uncoated glass fabrics for insulation, fire protection, and composite reinforcement applications. The company’s domestic manufacturing base supports North American supply chains requiring fiberglass substrates suitable for downstream silicone or other elastomeric coating processes used in thermal and fire-resistant material systems.
5. Newtex Industries
Newtex Industries, based in New York, manufactures high-temperature textiles including silicone-coated fiberglass fabrics used in welding protection, fire curtains, and thermal insulation covers. The company markets its coated fabrics for industrial fire safety applications and has developed a range of coating options intended to extend fabric durability under repeated thermal cycling, positioning it as a supplier serving industrial and safety-focused end markets in North America.
6. Auburn Manufacturing Inc.
Auburn Manufacturing, headquartered in Maine, produces high-temperature protective fabrics, including silicone-coated and vermiculite-coated fiberglass materials used in welding curtains, fire blankets, and thermal barriers. The company emphasizes U.S.-based manufacturing and custom fabrication services, supplying industrial safety products and protective textiles to sectors requiring heat and flame-resistant materials.
7. China Jushi Co., Ltd. (Zhejiang Hengshi)
China Jushi, one of the largest fiberglass producers globally and headquartered in Zhejiang, China, manufactures fiberglass yarns and fabrics at significant industrial scale, supplying raw glass fiber substrates used in downstream silicone coating processes for insulation and composite reinforcement markets. Its large-scale production capacity supports global export volumes, making it a substrate supplier relevant to fabricators producing coated fiberglass materials for automotive and industrial applications.
8. Morgan Advanced Materials
Morgan Advanced Materials, headquartered in the United Kingdom, supplies high-temperature insulation and thermal management materials, including coated textile products used in fire protection and thermal barrier systems across industrial and transportation sectors. The company’s materials science background supports engineered solutions for extreme temperature environments, with a global presence serving automotive, aerospace, and industrial customers requiring certified thermal protection materials.
www.weiduncomposite.com
Suzhou Weidun Composite Fabric Co., Ltd.
