Based in Dongguan, Guangdong—China’s premier hub for industrial rubber component manufacturing—HS offers factory wholesale professional custom silicone rubber O-rings, engineered for high precision and durability across industrial machinery applications. Our SR-HS01 silicone rubber O-rings (available in NR, NBR, EPDM, and silicone formulations) are precision-molded to meet rigorous industrial standards, with customizable sizes, a 1000-piece MOQ, and OEM/ODM support to deliver cost-effective, multi-function sealing solutions for global industrial manufacturers. Whether you require NBR oil-resistant O-rings for hydraulic systems or EPDM weather-resistant seals for outdoor machinery, our factory-direct wholesale model ensures consistent quality, scalable supply, and tailored solutions for your industrial sealing needs.
Core Features of Our Silicone Rubber O-Rings Our silicone rubber O-rings stand out for their high precision, multi-material versatility (NR/NBR/EPDM/silicone), and industrial-grade durability—key traits that make them ideal for multi-function use in industrial machinery.First, material versatility defines our silicone rubber O-rings: NR offers superior elasticity and abrasion resistance for general industrial use; NBR delivers exceptional oil/fuel resistance for hydraulic and automotive machinery; EPDM provides weather, ozone, and chemical resistance for outdoor industrial equipment; silicone ensures high-temperature tolerance (up to 230°C) and low-temperature flexibility (-40°C) for extreme-environment applications. All formulations are engineered for long-lasting durability, resisting wear, fatigue, and degradation in heavy industrial use.Second, high-precision manufacturing is central to our silicone rubber O-rings. Our moulding process achieves a tolerance of ±0.02mm, ensuring custom-sized O-rings fit seamlessly into industrial machinery components—from small valves to large pump housings. We offer customer-requested colors and precise size customization (from micro to large diameters), while maintaining consistent roundness and cross-section to guarantee leak-proof sealing performance.Third, practical industrial design is embedded in every silicone rubber O-ring. The robust elastomer composition resists compression set, mechanical shock, and chemical exposure (acids, solvents, industrial fluids), while the multi-function design adapts to diverse industrial machinery needs—eliminating the need for multiple seal types and simplifying inventory management for manufacturers.
Competitive Advantages of Our Silicone Rubber O-Rings Choosing our silicone rubber O-rings means partnering with a factory-direct manufacturer with 20+ years of industrial rubber expertise, prioritizing cost efficiency, customization, and reliability for industrial clients. Factory Wholesale Pricing & Scalable Supply Our factory wholesale model eliminates middlemen, offering competitive pricing on silicone rubber O-rings without compromising quality. With a 1000-piece MOQ, we cater to small and medium-sized manufacturers, while our large-scale production facility (10,000+ sq.m) and automated moulding lines enable bulk orders for major industrial brands—ensuring on-time delivery even for high-volume requests. Customization Flexibility & OEM/ODM Support We welcome full OEM/ODM customization for silicone rubber O-rings: custom sizes (per client drawings/specs), material blends (NR/NBR/EPDM/silicone), colors, and even branded marking (custom logos) are available. Free samples are provided to validate fit and performance before bulk orders, ensuring our O-rings align perfectly with your industrial machinery design requirements. Rigorous Quality Control & Consistency Every batch of silicone rubber O-rings undergoes 100% quality inspection, including dimensional precision checks, material durability testing, compression set validation, and leak-proof performance trials. Our ISO 9001-certified quality system guarantees consistent performance across all orders, reducing downtime and replacement costs for industrial equipment operators. Technical Expertise & Customer Support Our team of rubber engineering specialists provides end-to-end support—from material selection guidance (e.g., NBR for oil applications, silicone for high heat) to technical drawings review. We offer 24/7 responsive service to address customization questions or supply chain needs, ensuring a seamless experience for wholesale clients worldwide.
Applications of Our Silicone Rubber O-Rings Our versatile silicone rubber O-rings serve critical sealing roles across industrial sectors, thanks to their multi-material flexibility and durable design:
Hydraulic & Pneumatic Systems: NBR silicone rubber O-rings seal hydraulic cylinders, pneumatic valves, and air compressors—their oil resistance and high precision prevent fluid/air leaks, optimizing system efficiency in manufacturing and construction machinery. Chemical Processing Equipment: EPDM/silicone silicone rubber O-rings seal pumps, reactors, and pipeline fittings—their chemical resistance withstands acids, alkalis, and solvents, ensuring safe operation in chemical plants. Food & Beverage Machinery: FDA-compliant silicone/NR silicone rubber O-rings seal mixing tanks, filling machines, and conveyor systems—their non-toxic, abrasion-resistant design meets food safety standards for processing equipment. Automotive Manufacturing Equipment: NBR/EPDM silicone rubber O-rings seal assembly line tooling, paint booth systems, and coolant lines—their durability and weather resistance withstand the harsh conditions of automotive production facilities. General Industrial Machinery: NR silicone rubber O-rings seal gearboxes, electric motors, and bearing housings—their high elasticity and cost-effectiveness make them ideal for standard industrial sealing applications, reducing overall equipment maintenance costs.
At our Dongguan manufacturing facility, we leverage advanced moulding technology and a skilled workforce (100+ professionals) to produce silicone rubber O-rings that exceed industrial performance standards. Our commitment to sustainability (ISO 14001 certified) ensures eco-friendly production practices without compromising durability or precision. We back all silicone rubber O-rings with a 3-year performance warranty: if our O-rings fail due to manufacturing defects within this period, we provide free replacements. Whether you need wholesale NBR oil-resistant O-rings for hydraulic machinery or custom silicone high-temperature O-rings for chemical processing equipment, we deliver silicone rubber O-rings that combine value, performance, and reliability—engineered for industry, 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!