Based in Dongguan, Guangdong—China’s premier hub for advanced energy rubber component manufacturing—HS specializes in high-pressure compatible silicone sealing gaskets, engineered with low outgassing properties for hydrogen fuel cell engines and hydrogen storage systems, as well as industrial machinery applications. Our EE-918-C7 silicone rubber products (core silicone rubber seals) are precision-crafted via moulding processing to meet the stringent safety and performance standards of the hydrogen energy industry, combining high-temperature resistance, high-pressure durability, and low outgassing compliance to deliver reliable machinery accessory solutions for hydrogen fuel cell manufacturers worldwide. Whether you require standard silicone rubber seals for industrial machinery or bespoke high-pressure gaskets for hydrogen storage tanks, our factory-direct capabilities ensure consistent quality, on-time delivery, and cost-effective solutions tailored to your hydrogen fuel cell sealing needs.
Core Features of Our Silicone Sealing Gaskets Our silicone sealing gaskets and silicone rubber products stand out for their high-pressure compatibility, low outgassing performance, and high-temperature resistance—key traits that make them ideal for hydrogen fuel cell engines, hydrogen storage systems, and industrial machinery accessories.First, the material quality of our silicone sealing gaskets is unmatched. We utilize premium high-performance silicone rubber (supplemented with EPDM, NBR, and NR options) that delivers exceptional high-pressure resistance (up to 10,000 PSI) for hydrogen storage applications, low outgassing (≤0.1% weight loss per ASTM E595), and high-temperature tolerance (withstanding up to 250°C). This formulation is chemically inert to hydrogen gas, preventing gas permeation and ensuring leak-proof sealing in fuel cell engine systems while complying with hydrogen industry safety standards.Second, precision engineering defines our silicone sealing gaskets. Our moulding processing achieves a tolerance of ±0.05mm, ensuring custom-sized and custom-shaped silicone rubber products fit seamlessly into hydrogen fuel cell stack manifolds, storage tank valves, and industrial machinery high-pressure components—eliminating gas leaks that compromise efficiency and safety. We offer custom colors per customer’s request and customized logo printing, aligning silicone rubber seals with hydrogen energy brand identity without compromising performance.Third, durability is embedded in every silicone sealing gasket we produce. The robust silicone composition resists hydrogen embrittlement, thermal aging, and mechanical fatigue from pressure cycling—extending the service life of hydrogen fuel cell and storage system components while reducing maintenance costs for energy manufacturers.
Competitive Advantages of Our Silicone Sealing Gaskets Choosing our silicone sealing gaskets and silicone rubber products means partnering with a manufacturer with 20+ years of high-performance rubber processing expertise, prioritizing safety, customization, and customer-centric service for hydrogen energy and industrial applications. High-Pressure & Low Outgassing Compliance Every silicone sealing gasket undergoes 100% quality inspection before shipment, including high-pressure resistance testing, low outgassing validation (ASTM E595), hydrogen compatibility checks, and dimensional verification—ensuring zero defects and adherence to global hydrogen fuel cell safety standards. Our strict quality control processes guarantee silicone rubber products meet the performance benchmarks required for hydrogen fuel cell engines, storage systems, and industrial machinery. Customization Flexibility & Scalable Production We offer a MOQ of 500 pieces for silicone sealing gaskets, making our solutions accessible to small and medium-sized hydrogen energy startups, while our 10,000-square-meter production facility and 2000+ existing molds enable scalable production to meet bulk orders for major industrial machinery brands. Custom sizes, shapes, and material blends for silicone rubber seals are available to fit any hydrogen fuel cell or high-pressure industrial component. Cost-Effective Factory-Direct Pricing As a direct manufacturer, we eliminate middleman markups, offering competitive pricing on high-pressure compatible silicone sealing gaskets without compromising low outgassing or high-temperature performance. Our one-stop procurement service streamlines design, prototyping, and production, reducing lead times and supply chain costs for your hydrogen energy and industrial machinery component orders. Technical Expertise & 24/7 Support Our team of energy rubber engineering specialists provides 7×24 online support for silicone sealing gasket inquiries, offering guidance on material selection and design optimization for hydrogen fuel cell engines and storage systems. We leverage deep hydrogen energy industry knowledge to solve complex sealing challenges, ensuring silicone rubber products deliver optimal high-pressure and low outgassing performance.
Applications of Our Silicone Sealing Gaskets Our versatile silicone sealing gaskets and silicone rubber products serve critical sealing roles in hydrogen energy and industrial settings, thanks to their high-pressure compatibility, low outgassing, and high-temperature resistance:
Hydrogen Fuel Cell Stacks: Silicone sealing gaskets seal fuel cell stack bipolar plates—their low outgassing prevents contamination of membrane electrode assemblies, and high-pressure resistance maintains gas-tight seals in stack manifolds. Hydrogen Storage Tanks: Custom-shaped silicone rubber products act as gaskets for storage tank valves and pressure relief devices—their high-pressure resistance (up to 10,000 PSI) prevents hydrogen leaks, and chemical inertness ensures long-term compatibility with hydrogen gas. Fuel Cell Engine Manifolds: Silicone rubber seals seal hydrogen fuel cell engine intake/exhaust manifolds—their high-temperature resistance withstands engine operating heat, and low outgassing complies with clean energy system requirements. Industrial Hydrogen Compressors: High-pressure silicone sealing gaskets seal compressor cylinder heads and piston rings—their durability resists pressure cycling, and low outgassing prevents oil contamination in hydrogen compression systems. Hydrogen Refueling Station Components: Silicone rubber products seal refueling nozzle connectors and pressure regulators—their high-pressure compatibility ensures safe hydrogen transfer, and low outgassing meets refueling station safety standards.
At our Dongguan manufacturing facility, we leverage a team of over 100 skilled professionals and state-of-the-art moulding processing equipment to produce silicone sealing gaskets that exceed hydrogen energy industry standards. Our commitment to quality is backed by ISO 9001 and ISO 14001 certifications, validating the reliability and sustainability of our silicone rubber products for international hydrogen fuel cell and industrial markets. We back all silicone sealing gaskets with a 3-year warranty: if unused silicone rubber seals develop quality issues within this period, we offer free returns and replacements. Whether you need high-pressure compatible gaskets for hydrogen storage tanks or low outgassing seals for fuel cell engines, we deliver silicone rubber products that combine safety, performance, and value—engineered for hydrogen energy, built to 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!