Based in Dongguan, Guangdong—China’s premier hub for automotive silicone component manufacturing—HS specializes in custom-molded silicone rubber O-rings seals, engineered as OEM-grade, high-temperature, and oil-resistant solutions for automotive engine cylinder heads and automotive sealing systems. Our Auto-07 silicone rubber O-rings seals are precision-crafted via mould processing, certified to ISO14001/ISO45001/IATF16949 standards, with customizable shapes/colors, a 1000-piece MOQ, free samples available, and branded logo integration to meet the stringent performance needs of global automotive manufacturers and auto parts replacement suppliers. Whether you require high-temperature seals for engine cylinder heads or oil-resistant O-rings for automotive fluid systems, our silicone rubber O-rings seals combine OEM-grade reliability, material versatility, and custom precision to optimize automotive sealing system performance.
Core Features of Our Silicone Rubber O-Rings Seals Our silicone rubber O-rings seals stand out for their OEM-grade quality, high-temperature resistance, and oil-resistant performance—key traits that make them ideal for automotive engine cylinder heads and automotive sealing system applications.First, material versatility and extreme performance define our silicone rubber O-rings seals: Premium silicone rubber (supplemented with EPDM/NBR/NR) delivers high-temperature resistance (up to 250°C) for engine cylinder head environments, paired with exceptional oil resistance (SAE 5W-30/10W-40 compliant) to prevent swelling or degradation in engine oil, transmission fluid, and hydraulic fluid exposure. The material also maintains flexibility at -40°C, ensuring reliable sealing in cold-start conditions critical for automotive performance.Second, custom-molded precision is central to our silicone rubber O-rings seals. Our mould processing achieves a tolerance of ±0.02mm, enabling custom-shaped seals to fit intricate engine cylinder head grooves and automotive sealing system components—eliminating leaks and ensuring tight, OEM-grade fits for auto parts replacement. We offer customer-requested colors (black for under-hood use, custom shades for branded components) and logo integration, aligning silicone rubber O-rings seals with automotive brand identities without compromising sealing integrity.Third, durable OEM-grade construction is embedded in every silicone rubber O-rings seal. The robust elastomer composition resists compression set, mechanical fatigue, and chemical exposure (coolants, fuels), while meeting IATF16949 automotive quality standards—extending service life for auto parts replacement and reducing warranty claims for automotive manufacturers.
Competitive Advantages of Our Silicone Rubber O-Rings Seals Choosing our silicone rubber O-rings seals means partnering with a certified manufacturer with 20+ years of automotive silicone expertise, prioritizing OEM compliance, customization, and scalability for automotive clients. Multi-Certification Compliance & Rigorous Quality Control Our silicone rubber O-rings seals are fully certified to ISO14001/ISO45001/IATF16949 standards, with every batch undergoing 100% quality inspection—including high-temperature resistance testing, oil immersion validation, dimensional precision checks, and compression set trials. This strict quality control ensures zero defects and adherence to global automotive OEM requirements, reducing compliance risk for manufacturers and auto parts replacement suppliers. Customization Flexibility & Scalable Production We offer a 1000-piece MOQ for silicone rubber O-rings seals, catering to small auto parts replacement businesses, while our 10,000-square-meter production facility and automated mould processing lines enable bulk orders for major automotive OEMs. Full customization support includes custom shapes (per engine cylinder head CAD drawings), material blends (silicone for high heat, NBR for oil resistance), colors, and logo branding—with free samples available to validate fit and performance before bulk production. Cost-Effective Factory-Direct Pricing As a factory-direct manufacturer, we eliminate middlemen to offer competitive pricing on OEM-grade silicone rubber O-rings seals without compromising high-temperature or oil-resistant performance. Our streamlined production process (from prototyping to mass production) reduces lead times by 20% compared to industry averages, ensuring on-time delivery for automotive production schedules and auto parts replacement orders. Technical Expertise & Automotive Industry Support Our team of silicone engineering specialists with automotive sealing experience provides 24/7 support—from material selection guidance (e.g., silicone for cylinder heads, EPDM for cooling system seals) to IATF16949 documentation assistance. We leverage deep knowledge of automotive engine design to solve complex sealing challenges, ensuring optimal performance of silicone rubber O-rings seals in high-stress engine bay environments.
Applications of Our Silicone Rubber O-Rings Seals Our versatile silicone rubber O-rings seals serve critical sealing roles across automotive systems, thanks to their OEM-grade quality and high-temperature/oil-resistant design:
Automotive Engine Cylinder Heads: Custom-molded silicone rubber O-rings seals seal cylinder head gaskets and valve cover ports—high-temperature resistance withstands engine bay heat, oil resistance prevents leaks, and OEM-grade fit ensures optimal compression and combustion efficiency. Automotive Transmission Systems: NBR-blended silicone rubber O-rings seals seal transmission fluid lines and torque converter components—oil resistance protects against fluid degradation, and flexibility adapts to transmission vibration, reducing fluid leaks. Automotive Cooling Systems: EPDM-blended silicone rubber O-rings seals seal radiator hoses and water pump ports—chemical resistance withstands coolant exposure, and temperature stability prevents hardening/cracking in extreme heat/cold. Automotive Fuel Systems: NR/NBR silicone rubber O-rings seals seal fuel injectors and fuel rail components—oil/fuel resistance prevents leaks, and OEM-grade precision aligns with fuel system safety standards for automotive use. Auto Parts Replacement Kits: Multi-size silicone rubber O-rings seals are included in engine repair kits—high-temperature/oil-resistant performance ensures reliable replacement for worn seals, reducing repeat repairs for mechanics and DIY users.
At our Dongguan manufacturing facility, we adhere to lean production practices and eco-friendly mould processing (ISO14001 certified) to minimize environmental impact without compromising product performance. We back all silicone rubber O-rings seals with a 3-year warranty against manufacturing defects, and offer lifetime technical support for custom OEM designs. Whether you need OEM-grade seals for engine cylinder heads or oil-resistant O-rings for auto parts replacement, we deliver silicone rubber O-rings seals that combine compliance, performance, and value—engineered for automotive excellence, 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!