Based in Dongguan, Guangdong—China’s premier hub for high-performance electrical silicone components—HS specializes in custom insulation, high-temperature resistant silicone rubber seals, engineered as gaskets and precision components for industrial electrical equipment. Our EE-01 silicone rubber seals are precision-molded to meet rigorous electrical safety standards, with ROHS/ISO9001/ISO14001/TS16949 certifications, customizable sizes/shapes, a 1000-piece MOQ, and free samples available to deliver reliable, compliant sealing solutions for global electrical equipment manufacturers. Whether you require insulating gaskets for high-voltage panels or high-temperature seals for industrial motor enclosures, our silicone rubber seals combine electrical safety, thermal stability, and custom design to optimize electrical equipment performance.
Core Features of Our Silicone Rubber Seals Our silicone rubber seals stand out for their superior electrical insulation, extreme high-temperature resistance, and custom precision—key traits that make them ideal for industrial electrical equipment applications.First, electrical insulation and thermal performance define our silicone rubber seals: Premium silicone rubber (supplemented with EPDM/NBR/NR) delivers exceptional dielectric strength (≥20 kV/mm) to prevent electrical leakage in high-voltage equipment, paired with high-temperature resistance (up to 260°C) and low-temperature flexibility (-50°C) to withstand extreme thermal fluctuations in electrical enclosures. All formulations comply with ROHS standards, ensuring no hazardous substances for eco-friendly electrical component production.Second, custom precision manufacturing is central to our silicone rubber seals. Our moulding process achieves a tolerance of ±0.03mm, enabling custom-shaped, custom-sized seals to fit complex electrical equipment geometries—from circuit board gaskets to motor housing seals. We offer customer-requested colors and customized logo printing, aligning silicone rubber seals with brand identity without compromising insulation or sealing integrity.Third, durable compliance design is embedded in every silicone rubber seal. The robust elastomer composition resists UV degradation, chemical exposure (oils, coolants), and mechanical fatigue—maintaining insulation performance and sealing integrity in electrical equipment over long service lives, reducing maintenance and replacement costs for manufacturers.
Competitive Advantages of Our Silicone Rubber Seals Choosing our silicone rubber seals means partnering with a certified manufacturer with 20+ years of electrical silicone expertise, prioritizing compliance, customization, and reliability for electrical equipment clients. Multi-Certification Compliance & Rigorous Quality Control Our silicone rubber seals are fully certified to ROHS/ISO9001/ISO14001/TS16949 standards, ensuring alignment with global electrical safety and quality benchmarks. Every batch undergoes 100% quality inspection—including dielectric strength testing, high-temperature resistance validation, dimensional precision checks, and ROHS compliance screening—to guarantee zero defects and consistent performance in electrical equipment applications. Customization Flexibility & Scalable Production We offer a 1000-piece MOQ for silicone rubber seals, catering to small and medium-sized electrical equipment manufacturers, while our 10,000-square-meter production facility and automated moulding lines enable bulk orders for major electrical brands. Free samples are available to validate fit and performance before bulk production, with custom sizes, shapes, and material blends (silicone/EPDM/NBR/NR) tailored to specific electrical insulation needs. Cost-Effective Factory-Direct Pricing As a factory-direct manufacturer, we eliminate middlemen to offer competitive pricing on certified silicone rubber seals without compromising insulation or high-temperature performance. Our streamlined production process optimizes efficiency, passing cost savings to clients while ensuring on-time delivery for electrical equipment production schedules. Technical Expertise & Electrical Industry Support Our team of silicone engineering specialists with electrical industry expertise provides 24/7 support—from material selection guidance (e.g., high-insulation silicone for HV panels, EPDM for outdoor electrical enclosures) to technical drawing reviews. We leverage deep knowledge of electrical equipment requirements to solve complex insulation and sealing challenges, ensuring optimal performance of silicone rubber seals.
Applications of Our Silicone Rubber Seals Our versatile silicone rubber seals serve critical insulation and sealing roles across industrial electrical equipment, thanks to their high-temperature resistance and electrical insulation performance:
High-Voltage Electrical Panels: Silicone rubber seals act as insulating gaskets for panel enclosures—their dielectric strength prevents electrical arcing, while high-temperature resistance withstands heat buildup in enclosed HV systems, ensuring operator safety. Industrial Electric Motors: Custom-shaped silicone rubber seals seal motor housings and terminal boxes—their insulation properties protect windings from moisture/dust, and high-temperature resistance withstands motor operating heat, extending motor lifespan. Electrical Control Cabinets: Silicone rubber seals seal control cabinet doors and cable entry points—their insulation and weather resistance (EPDM blends) protect internal circuitry from environmental exposure and electrical leakage in factory settings. Power Distribution Equipment: Silicone rubber seals insulate busbar enclosures and transformer gaskets—their high-temperature resistance and dielectric strength optimize power distribution efficiency and safety in electrical grids. Renewable Energy Electrical Components: Silicone rubber seals seal solar inverter enclosures and wind turbine electrical systems—their ROHS compliance and extreme temperature resistance adapt to outdoor renewable energy environments, ensuring reliable insulation performance.
At our Dongguan manufacturing facility, we leverage advanced moulding technology and a skilled workforce (100+ professionals) to produce silicone rubber seals that exceed electrical industry standards. Our ISO14001 certification validates eco-friendly production practices, minimizing environmental impact without compromising product performance. We back all silicone rubber seals with a 3-year warranty: if seals fail due to manufacturing defects within this period, we provide free replacements. Whether you need custom insulating gaskets for high-voltage panels or high-temperature seals for electric motors, we deliver silicone rubber seals that combine compliance, performance, and value—engineered for electrical equipment, built to insulate and seal.
Product Description
Company Profile
Founded in 2003, Dongguan Huangshi Rubber & Plastic Tech Co., Ltd. is one of the famous silicone and plastic products manufacturers. Our factory is located in Chang'an Town, Dongguan City, enjoying good location and convenient transportation access. Being specialized in silicon mold making,plastic mold making and silicon and plastic products manufacturing, we always try our best to provide you with best-quality products. With a workshop of 6,000 square meters and a serious QC department, we are professional in making all kinds of silicone and plastic cases for cells phones, MP3, MP4 and MP5 players, silicone keyboards, silicone series parts of electronic goods, silicone kitchen accessories and silicone toys. We are sure to make better quality and better price silicone rubber and plastic products for you. Our main foreign trade markets include Southeast Asia, Europe and America. We also provide ODM/OEM products for many national famous companies. In order to satisfy different requirements from our clients, we import raw materials and machines to make our goods reach the standards of RoHS, ISO, SGS and EN71. "Do a good job at first time; do a better job every time" is our tenet. Please don't hesitate to contact us if you have any problem. We must be the one which you can trust in. We look forward to your requirements. Choose us,and we can do better for you!