Based in Dongguan, Guangdong—China’s premier hub for industrial rubber sealing components—HS specializes in factory wholesale food-grade silicone rubber O-rings, alongside NBR, FKM, HNBR, EPDM, and nitrile rubber variants, engineered for durable, multi-functional use in industrial machinery. Our SR-HS03 silicone rubber O-rings are precision-molded from high-grade elastomers, with customizable sizes/colors, a 1000-piece MOQ, free samples available, full OEM/ODM support, and wholesale pricing to meet the bulk needs of global industrial machinery manufacturers and suppliers. Whether you require food-grade silicone O-rings for processing equipment or chemical-resistant FKM O-rings for heavy machinery, our wholesale rubber O-rings combine material versatility, industrial durability, and cost efficiency to optimize machinery performance.
Core Features of Our Silicone Rubber O-Rings Our silicone rubber O-rings stand out for their food-grade compliance, material versatility, and industrial-grade durability—key traits that make them ideal for multi-functional use in industrial machinery and wholesale distribution.First, food-grade safety and material diversity define our silicone rubber O-rings: Premium silicone is FDA/LFGB-compliant for food-processing machinery applications, while NBR/FKM/HNBR/EPDM variants deliver specialized performance (NBR for oil resistance, FKM for chemical resistance, EPDM for weather resistance). All elastomers exhibit exceptional durability, resisting compression set, temperature fluctuations (-40°C to 250°C), and mechanical fatigue in high-cycle machinery operations.Second, wholesale precision manufacturing is central to our silicone rubber O-rings. Our moulding process achieves a tolerance of ±0.02mm, enabling customized sizes (micro to large diameters) to fit any industrial machinery sealing surface—from pump housings to valve ports and conveyor system components. We offer customer-requested colors (black for industrial use, custom shades for brand alignment) and consistent batch quality critical for wholesale orders.Third, multi-functional industrial design is embedded in every silicone rubber O-ring. The robust elastomer composition resists abrasion, fluid exposure (oils, chemicals, food-grade fluids), and high pressure (up to 3000 PSI), while maintaining flexibility to adapt to dynamic machinery movement—reducing unplanned downtime and replacement costs for industrial operations.
Competitive Advantages of Our Silicone Rubber O-Rings Choosing our silicone rubber O-rings means partnering with a factory-direct wholesale manufacturer with 20+ years of elastomer expertise, prioritizing scalability, material quality, and cost efficiency for industrial clients. Wholesale Scalability & Rigorous Quality Control Our silicone rubber O-rings are optimized for factory wholesale orders, with every batch undergoing 100% quality inspection—including food-grade compliance testing (for silicone variants), material performance validation (oil/chemical resistance), dimensional precision checks, and durability trials. Our strict quality control ensures consistent performance across bulk shipments, meeting global industrial machinery standards and minimizing defect rates for wholesale buyers. Material Versatility & Customization Flexibility We offer full customization for silicone rubber O-rings (and NBR/FKM/HNBR/EPDM alternatives) to match specific machinery needs: custom sizes, hardness levels, colors, and material blends (e.g., silicone-EPDM for food-grade + weather resistance). With a 1000-piece MOQ (scalable to 1,000,000+ units for large wholesale orders), we cater to small machinery workshops and major industrial OEMs alike, with free samples to validate fit before bulk production. Factory-Direct Wholesale Pricing As a factory-direct manufacturer, we eliminate middlemen to offer competitive wholesale pricing on silicone rubber O-rings without compromising material quality or durability. Our bulk material sourcing and automated moulding lines reduce per-unit costs by 20% compared to intermediary suppliers, while streamlined production (10,000+ sq.m facility) ensures on-time delivery for wholesale machinery component orders. Technical Expertise & Industrial Support Our team of elastomer engineering specialists provides 24/7 support—from material selection guidance (e.g., silicone for food machinery, FKM for chemical processing) to mould design optimization for wholesale production efficiency. We leverage deep knowledge of industrial machinery sealing needs to solve complex performance challenges, ensuring optimal reliability of silicone rubber O-rings in diverse industrial environments.
Applications of Our Silicone Rubber O-Rings Our versatile silicone rubber O-rings serve critical sealing roles across industrial machinery, thanks to their material versatility and wholesale scalability:
Food Processing Machinery: Food-grade silicone rubber O-rings seal mixers, conveyors, and filling equipment—FDA compliance ensures safety for food contact, while durability resists wear from food particles and cleaning chemicals. Hydraulic/Pneumatic Machinery: NBR/FKM silicone rubber O-rings seal hydraulic cylinders and pneumatic valves—oil/chemical resistance prevents leaks, and high-pressure performance optimizes machinery efficiency in manufacturing plants. Packaging Machinery: EPDM/silicone rubber O-rings seal sealing bars and conveyor rollers—weather resistance (EPDM) suits factory environments, while food-grade silicone aligns with packaging for edible goods. Heavy-Duty Construction Machinery: HNBR/silicone rubber O-rings seal engine components and hydraulic lines—temperature resistance withstands extreme job site conditions, and durability reduces maintenance for construction fleets. Industrial Pump Systems: Multi-material silicone rubber O-rings seal centrifugal and positive displacement pumps—material versatility adapts to pumped fluids (water, oil, chemicals), ensuring leak-proof operation in industrial facilities.
At our Dongguan manufacturing facility, we adhere to eco-friendly moulding practices (recyclable elastomer scrap, low-energy production) without compromising wholesale quality or performance. We back all silicone rubber O-rings with a 3-year warranty against manufacturing defects, and offer lifetime technical support for wholesale order optimizations. Whether you need bulk food-grade silicone O-rings for processing machinery or chemical-resistant FKM variants for heavy industry, we deliver silicone rubber O-rings that combine scalability, performance, and value—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!