OEM O Ring Size Chart: China Professional Rubber Seals Manufacturer
Yiho Polytek offers OEM O Ring Size Chart, designed to deliver precise sealing solutions for a variety of industries. Our O rings are crafted from high-quality materials like NBR, EPDM, Silicone, and Viton/FKM, ensuring they meet specific sealing needs in high-pressure, high-temperature, and chemical environments. Whether you’re working in petroleum, chemical processing, medical devices, or food production, our O rings provide long-term performance, with exceptional resistance to wear, aging, high temperatures, and chemical exposure.
Our O rings are engineered to meet the highest performance standards, providing reliability and ensuring a secure, leak-free seal in demanding environments. OEM customization is available to cater to specific size, material, and hardness requirements.
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OEM O Ring Size Chart Attributes
The OEM O Ring Size Chart allows you to easily find the correct O ring size for your application, ensuring a proper seal for your equipment and machinery. Whether you need a standard size or a fully customized solution, we offer a wide range of options.
| Features | Benefits |
|---|---|
| Pressure Resistance | Ensures a leak-free seal even in high-pressure environments |
| Chemical Resistance | Withstands aggressive chemicals, making it ideal for chemical processing |
| Temperature Tolerance | Performs under extreme temperatures, from -70°C to 320°C |
| Wear Resistance | Durable and reliable, even under continuous mechanical stress |
| Aging Resistance | Maintains sealing performance over time, reducing maintenance costs |
| Customization | Tailored O rings in various sizes, materials, and hardness |
Product Details Table
| Item | Specification |
|---|---|
| Product Name | OEM O-Ring Size Chart / Custom Rubber Seals |
| Available Materials | NBR, HNBR, EPDM, Silicone, Viton/FKM, FFPM, PU, NR, CR, PTFE |
| Hardness Range | 30–90 Shore A |
| Temperature Range | NBR (-40~120°C), HNBR (-40~150°C), Viton (-20~200°C), Silicone (-70~220°C), EPDM (-50~150°C), FFKM (-20~320°C), PU (-40~90°C) |
| Key Features | High pressure resistance, oil resistant, weather resistant, abrasion resistant, solvent resistant, high temperature resistant, aging resistant, insulation, acid & alkali resistant |
| Color Options | Black, Red, White, Blue, Green, Transparent, Custom |
| Size Range | Any size available (standard and non-standard), ID from 0.5mm to 1000mm+ |
| Sample Lead Time | 3 days (in-stock), 7-10 days (custom molds) |
| Production Lead Time | 7-15 days after payment confirmation |
| Shipping Methods | UPS/FedEx/DHL (small quantity), Air/Sea (bulk orders) |
| Port of Shipment | Xiamen (main port) |
| Certifications | ISO 9001:2008, RoHS, FDA (food grade materials available) |
| Custom Services | OEM/ODM welcome: logo printing, custom compounds, special packaging |
Materials & Sourcing
Yiho Polytek manufactures OEM O Rings from premium materials designed to meet the specific requirements of various industrial applications. Here are the materials we use:
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NBR (Nitrile Butadiene Rubber): Known for its excellent resistance to oils, fuels, and general chemicals. It is commonly used in petroleum and automotive applications.
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HNBR (Hydrogenated Nitrile Butadiene Rubber): Provides superior resistance to heat, oxidation, and aging, ideal for heavy-duty industrial applications.
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EPDM (Ethylene Propylene Diene Monomer): Known for its resistance to weathering, ozone, and high-temperature steam, making it perfect for outdoor and water treatment applications.
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Silicone: Offers exceptional flexibility and reliable sealing in both high and low temperatures, ideal for medical and food industry applications.
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Viton/FKM (Fluorocarbon Rubber): Provides superior resistance to extreme temperatures and chemicals, commonly used in aerospace, chemical and automotive industries.
These materials are carefully selected to ensure our O rings deliver optimal performance in challenging environments.

Structure & Durability
The structure of our OEM O Rings is designed for maximum durability. Whether in high-pressure systems, harsh chemical environments, or temperature-sensitive applications, our O rings remain reliable and efficient. The key benefits of our O rings include:
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Pressure Resistance: Our O rings are engineered to maintain an effective seal even under extreme pressure.
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Chemical & Temperature Resistance: With superior chemical and temperature resistance, our O rings can handle aggressive chemicals and extreme temperatures from -70°C to 320°C.
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Wear & Abrasion Resistance: Our O rings offer excellent wear resistance, making them ideal for machinery and equipment that experience constant movement and friction.
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Aging Resistance: Designed to resist aging and UV degradation, ensuring long-term reliability.
Our O rings are tested to ensure they meet industry standards, providing high-quality sealing solutions that stand the test of time.
Capacity & Use Scenarios
The OEM O Ring Size Chart offers sealing solutions for a wide range of applications:
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High-Pressure Systems: Ideal for pumps, valves, and pipelines in petroleum and chemical industries.
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Temperature-Sensitive Equipment: Suitable for heat exchangers, sterilizers, and other equipment that operates under extreme temperature conditions.
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Chemical Processing: Perfect for sealing chemical reactors, storage tanks, and pipes in chemical industries.
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Medical & Food Applications: Our FDA-approved O rings are used in medical devices and food production equipment where safety and cleanliness are paramount.

Interior Structure Overview
Our O rings are engineered to ensure a secure and consistent seal under varying operational conditions. Whether you’re working in chemical processing, food production, or petroleum extraction, our O rings are designed for optimal sealing performance.
About Yiho Polytek
Founded in 1994, Yiho Polytek has become one of China’s leading manufacturers of OEM O Rings. We specialize in custom sealing solutions and provide both OEM and ODM services for industries worldwide. Our factory is ISO 9001:2008 certified, ensuring that every O ring meets the highest quality standards. With a focus on innovation and customer satisfaction, we deliver sealing solutions that meet the most demanding industry requirements.
Client Case Studies
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U.S. Automotive Manufacturer: Annual supply of custom O rings for high-performance automotive sealing applications.
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European Chemical Plant: Customized seals for chemical processing, designed to withstand aggressive substances.
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Medical Equipment Supplier: Medical-grade silicone O rings used in sterile medical devices requiring precision and reliability.
Our products are shipped to North America, Europe, and Asia, ensuring compliance with international trade and retail standards.
FAQ
Q1: Can I put my logo on the O Rings?
A1: Yes, we can print or emboss your logo on the O rings. Please provide your specifications in advance, and we will customize accordingly.
Q2: What global markets do you supply?
A2: We supply O rings to North America, South America, Europe, Middle East, and more.
Q3: Can I order customized O rings?
A3: Yes, we offer customized O rings in different materials, sizes, colors, and hardness. Let us know your requirements, and we will provide a tailored solution.
Q4: What is your delivery time?
A4: Delivery takes 7-15 days after payment, depending on order size and customization.
Q5: Can I order a sample?
A5: Yes, we offer samples for in-stock products, and they can be delivered within 3 days.

