Rubber O Ring – High-Performance Sealing Solution
1. Product Overview
Rubber O Rings are essential sealing components widely used across automotive, hydraulic, pneumatic, water systems, household appliances, and industrial machinery. A high-quality Rubber O Ring ensures leak-free performance, reduces maintenance costs, and protects equipment from damage. Best Seal provides durable, precision-engineered O Rings suitable for demanding environments.
2. Material Options
• NBR – Ideal for oils, fuels, lubricants
• HNBR – Enhanced strength for high-pressure & automotive systems
• EPDM – Excellent for hot water, steam, outdoor use
• FKM (Viton) – High chemical & high-temperature resistance
• Silicone – Clean, flexible, suitable for food & medical use
• Custom compounds – FDA-grade, low-temp, high-pressure, flame-resistant
|
Material |
Abbr. |
Hardness (Shore A) |
Temp Range |
Key Features |
Advantages |
Limitations |
Typical Applications (Concise) |
|
Nitrile Rubber |
NBR |
30–90 |
-40°C ~ +120°C |
Oil/fuel resistance |
Affordable, versatile. |
Poor ozone/weather resistance. |
Hydraulic systems, General machinery. |
|
Styrene-Butadiene |
SBR |
40–80 |
-50°C ~ +100°C |
Good resilience |
Low cost, elasticity. |
Poor oil/solvent resistance. |
Non-petroleum brake fluid, Dampeners. |
|
Natural Rubber |
NR |
30–80 |
-60°C ~ +80°C |
Highest tensile strength |
Excellent elasticity. |
Poor heat resistance, zero oil resistance. |
Shock mounts, Elastic gaskets. |
|
Chloroprene |
CR (Neoprene®) |
50–80 |
-40°C ~ +100°C |
Weather/refrigerant resistance |
Good general-purpose. |
Poor resistance to aromatic oils. |
Refrigeration, Marine sealing. |
|
Ethylene Propylene |
EPDM |
40–90 |
-50°C ~ +150°C |
Weather/Water/Steam resistance |
Excellent outdoor performance. |
Poor oil/fuel resistance. |
Plumbing, Brake fluid, HVAC systems. |
|
EPDM Peroxide Cure |
EPDM (P-Cure) |
60–90 |
-50°C ~ +150°C |
Higher thermal stability |
Reliable for hot water/steam. |
Poor oil/fuel resistance (same as std EPDM). |
Automotive cooling, Steam applications. |
|
Butyl Rubber |
IIR |
40–75 |
-40°C ~ +120°C |
Excellent gas impermeability |
Suitable for vacuum. |
Poor resistance to petroleum oils/solvents. |
Vacuum seals, Pharmaceutical stoppers. |
|
Carboxylated Nitrile |
XNBR |
70–95 |
-30°C ~ +100°C |
High abrasion resistance |
Excellent for dynamic sealing. |
Lower flexibility than NBR. |
High-pressure seals, Industrial rollers. |
|
Polyurethane |
PU |
60–95 |
-40°C ~ +85°C |
Extreme mechanical strength |
Preferred for high-pressure. |
Poor resistance to hot water/steam (hydrolysis). |
High-pressure hydraulic cylinders. |
|
Hydrogenated Nitrile |
HNBR |
50–90 |
-40°C ~ +150°C |
Heat/oil/high strength |
Superior durability. |
Higher cost than standard NBR. |
Automotive A/C, Oilfield equipment. |
|
Polyacrylate |
ACM |
50–80 |
-20°C ~ +150°C |
Resistance to hot oil |
Suits transmission fluids. |
Poor low-temperature flexibility, poor water resistance. |
Automotive transmissions, Engine seals. |
|
Silicone |
SI(VMQ) |
5–90 |
-60°C ~ +230°C |
Wide temp range, food-grade |
Excellent high/low-temp. |
Low mechanical strength, poor oil resistance. |
Food/beverage, Medical devices. |
|
Fluorosilicone |
FSI (FVMQ) |
40–80 |
-60°C ~ +180°C |
Oil and low-temp resistance |
Suitable for aerospace fuel. |
Poor tear strength, high cost. |
Aircraft fuel systems, Low-temp oil seals. |
|
Fluorocarbon |
FKM (Viton®) |
50–90 |
-20°C ~ +250°C |
Excellent heat/chemical/oil resistance |
Suitable for corrosive fluids. |
Higher cost, poor performance with hot water/steam. |
High-temp auto engines, Chemical pumps/valves. |
|
Polytetrafluoroethylene |
PTFE (Teflon) |
50-65D |
-200°C ~ +260°C |
Extreme chemical resistance |
Non-Elastomer, resists most chemicals. |
No elasticity (requires mechanical energizer). |
Chemical equipment seals, Bearings. |
|
Perfluoroelastomer |
FFKM |
60–90 |
-30°C ~ +320°C |
Universal Chemical Resistance |
Ultimate reliability in extreme heat. |
Extremely high cost. |
Chemical processing, Semiconductor. |
|
Internally Lubricated |
- |
Varies |
Varies |
Contains internal lubricant |
Reduces friction, aids assembly. |
Higher formulation cost, lubricant may leach out over time. |
Automated assembly lines, Pneumatic cylinders. |
|
Thermoplastic Rubber |
TPR |
5A-85D |
-50°C ~ +135°C |
Combines plastic/rubber traits |
Recyclable, easy to mold. |
Limited temperature range and chemical resistance. |
Consumer goods, Non-critical sealing. |
3. Key Features
• Strong sealing for liquids & gases
• High resistance to oils, fuels, water & chemicals
• Works under both high and low temperatures
• Suitable for static and dynamic applications
• Available in metric, inch & AS568 sizes
• Customizable hardness, material & color
4. Our Advantages
4.1 Professional Manufacturing Experience
We have extensive experience producing O Rings for various industries, ensuring stable sealing and leak prevention.
4.2 Wide Material Coverage
From NBR and EPDM to high-performance FKM and HNBR, we offer options for all working environments.
4.3 Precision Mold & Accurate Sizing
High-precision molds and digital measurement equipment ensure tight tolerances and consistent quality.
4.4 Strict Quality Control
Every batch is checked for hardness, tensile strength, compression set & dimensions.
4.5 Large Production Capacity
Daily output reaches 5 million pcs, supporting fast production and large orders.
4.6 Custom Solutions
Custom sizes, colors, hardness, materials & packaging are available to fit all customer needs.
4.7 Competitive Factory Pricing
As a direct manufacturer, we provide stable quality at competitive prices to help customers stay ahead in the market.
1.10,000+ Molds Available – Extensive mold library to meet diverse size and material requirements.
2.No MOQ, Starts from One Piece – Flexible customization from sample testing to bulk production.
3. In-Stock Inventory - Standard sizes in stock, ensuring quick shipment, Fast Global Delivery
5. What Customers Care About
• Can the O Ring resist my chemicals or fluid?
→ Yes, we select the right material based on oil, fuel, steam, refrigerant, or chemicals.
• Will it handle my operating temperature?
→ Available ranges from −60°C to +230°C depending on material.
• Can you match special sizes?
→ Yes. AS568 / metric / DIN / JIS / custom sizes all available.
• Do you accept small trial orders?
→ Yes, samples and low MOQ are supported.
• How fast is the delivery?
→ Standard sizes ship fast. Custom orders supported by our 5M pcs/day capacity.
• How do you guarantee quality?
→ Full inspection on hardness, dimensions, compression set & visual defects.
6. Applications
• Hydraulic & pneumatic systems
• Automotive engines, fuel systems, injectors
• Pumps, valves, compressors
• Water filtration & plumbing
• Home appliances
• Industrial machinery
• Food & medical equipment (material-dependent)
7. Conclusion
Rubber O Rings play a critical role in ensuring equipment safety, efficiency, and durability. With strong material options, strict quality control, and flexible customization, Best Seal delivers reliable O Ring solutions trusted by customers worldwide.
8.Contact US
Xiamen Best Seal Imp and Exp Co.,Ltd
Tel: +86-592-5782315
Mob: +8618950159396
Email: yunying2@bestsealhk.com
Add: Unit 522-525, Gaodian Road 6#, Huli District, Xiamen, China
Why choose us?
- Our Solid O-ring products have a wide range of applications, making them suitable for various industries.
- We have won unanimous praise from customers with the business tenet of operating with integrity and satisfying customers, and with good product quality.
- We offer a comprehensive range of Solid O-ring products to meet various industrial requirements.
- Our company adheres to the brand core concept of 'win the good reputation with integrity and seek development by quality' and embodies the characteristics of international enterprises.
- We follow strict manufacturing protocols to ensure consistency in our Solid O-ring products.
- Our good corporate reputation has rapidly expanded our influence in the industry and opened up a broad market space.
- Our Solid O-ring products come in a variety of sizes and materials, tailored to suit our customers' needs.
- In the spirit of "truth-seeking and pragmatic" mentality, our company strives to make its due contribution in the tide of development.
- We ensure we source materials of the highest quality for our Solid O-ring products.
- The really abundant projects management experiences and 1 to just one provider model make the high importance of business enterprise communication and our easy understanding of your expectations for China Rubber O Ring.
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