BSCIIS09001-2015,IS014001-2015,IS045001-2018Sedex,nga,W270(Drinking water sanitation certificate),LFGBROHS,TUV
Based in Dongguan, Guangdong—China’s hub for mold manufacturing—we specialize in high-precision, custom-size O rings, offering cost-effective OEM solutions for heat-resisting rubber seals crafted from NBR, FKM, FPM, EPDM, and silicon. Our rubber O rings are engineered to meet the strictest industrial standards, combining food-grade safety, thermal resilience, and full customization to deliver reliable sealing performance across diverse applications. Whether you need standard O rings for general use or tailored silicon O rings for extreme-temperature environments, our cutting processing capabilities ensure every product is precision-engineered to your exact specifications.
Core Features of Our Rubber O Rings Our rubber O rings stand out for their premium material quality, precision engineering, and uncompromising safety standards.First, the material versatility of our rubber O rings is unmatched—we offer NBR for oil resistance, FKM/FPM for chemical and high-heat tolerance, EPDM for weather and ozone resistance, and silicon for food-grade safety and thermal stability. All rubber O rings are food-grade, nontoxic, eco-friendly, and BPA-free, making them safe for sensitive applications like food processing and medical devices.Second, precision is central to our rubber O rings. Our cutting processing technology ensures tight dimensional accuracy, with custom sizes available to fit any equipment or project requirements. 2D/3D design capabilities allow us to produce rubber O rings with intricate shapes and exact measurements, eliminating fit issues and ensuring reliable sealing.Third, full customization defines our rubber O rings. We offer custom logos, any color matching, and tailored packaging (standard OPP bag + carton, fully customizable), allowing brands to align rubber O rings with their identity and functional needs.
Competitive Advantages of Our Rubber O Rings Choosing our rubber O rings means partnering with a factory-direct supplier that prioritizes quality, affordability, and flexibility. Cost-Effective Pricing & Flexible Ordering We offer low-price rubber O rings without compromising quality, with flexible MOQ terms: 20 pieces for spot goods and 2000 pieces for custom rubber O rings. This accessibility makes our rubber O rings ideal for small businesses, startups, and large-scale industrial buyers alike. Free samples (shipping cost only) of rubber O rings are available, with sample lead times of 3–10 days, enabling you to validate quality and fit before full production. Comprehensive OEM/ODM Services Our OEM/ODM services for rubber O rings cover every aspect of customization: custom materials (NBR, FKM, FPM, EPDM, silicon), colors, sizes, and packaging. Our team works closely with clients to translate 2D/3D designs into functional rubber O rings, ensuring alignment with your project goals and industry requirements. Rigorous Quality Assurance & Certification Every rubber O ring undergoes 100% quality inspection before shipment, backed by an extensive certification portfolio: 3A credit enterprise certification, ISO 13485 (medical device certification), BSCI, ISO 9001-2015 (quality management), ISO 14001-2015 (environmental management), ISO 45001-2018 (occupational health and safety), Sedex, NQA, W270 (drinking water sanitation), LFGB, ROHS, and TUV. These certifications validate the safety and reliability of our rubber O rings for global markets. Flexible Payment & Reliable Support We offer flexible payment terms for rubber O rings, including T/T, Western Union, PayPal, and cash, to accommodate international clients. Our 7×24 online customer service team provides prompt support for pre-sales inquiries and after-sales assistance, ensuring a seamless experience for every order of rubber O rings.
Applications of Our Rubber O Rings Our versatile rubber O rings serve a wide range of industries, thanks to their heat resistance, safety, and customization options:
Food & Beverage Industry: Food-grade silicon rubber O rings are used in food processing equipment, beverage dispensers, and kitchen appliances—their BPA-free, nontoxic design ensures safety for direct contact with food, while heat resistance withstands high-temperature processing and cleaning. Medical & Healthcare: Compliant with ISO 13485, our rubber O rings are integrated into medical devices, diagnostic equipment, and pharmaceutical machinery. The hypoallergenic, sterile properties of silicon rubber O rings make them ideal for patient-facing and sterile environments. Automotive & Industrial Manufacturing: NBR, FKM, and EPDM rubber O rings are used in automotive engines, hydraulic systems, and industrial machinery—their heat and chemical resistance prevents leaks and ensures operational reliability in harsh conditions. Water Treatment & Sanitation: Certified to W270 standards, our rubber O rings seal water filtration systems, plumbing fixtures, and drinking water equipment, providing leak-proof performance and compliance with sanitation regulations. Electronics & Aerospace: Heat-resisting FKM/FPM rubber O rings protect sensitive electronic components and aerospace equipment from extreme temperatures, moisture, and chemicals, ensuring long-term durability in high-stakes applications.
At our Dongguan manufacturing facility, we leverage over 20 years of rubber processing expertise to produce rubber O rings that combine precision, affordability, and performance. Our 10,000-square-meter plant, advanced cutting processing equipment, and strict quality control processes ensure every rubber O ring meets your exact specifications. With a tolerance of ±0.05mm, our rubber O rings deliver consistent fit and sealing performance across every batch. Whether you need standard rubber O rings or fully customized heat-resisting seals, we are committed to delivering products that exceed your expectations—on time, on budget, and engineered for longevity. With our rubber O rings, you gain a reliable partner for all your sealing needs, backed by industry-leading expertise and customer-centric service.
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!