O Ring
Your Professional O Ring Supplier
Tianjin Maojie Rubber Products Co., Ltd. is a private enterprise specializing in the integrated design and manufacturing of rubber products. Currently, the company provides customized processing services for rubber and plastic products across various industries. Its main product portfolio includes a wide range of rubber components—such as O-rings, seals, mechanical seals, and gaskets—plastic parts, molded hardware packaging, metal-plastic composites, rubber shafts, rubber rollers, and other specialized rubber products.
Customized Services
The company offers tailored manufacturing solutions based on technical drawings and specifications provided by clients. Upon submission of required documentation, we provide detailed cost estimates. Production proceeds upon client confirmation of pricing and technical requirements.
Free Sample Provision
For products requiring mold development, we offer free sample production following mold fabrication. Samples are delivered to clients for evaluation and approval. Mass production commences only after formal confirmation of sample compliance with specifications.
Advanced Production Equipment
Our production line is equipped with state-of-the-art facilities, including raw material pre-treatment systems, mixing equipment, molding machines, vulcanization units, and post-processing apparatus, ensuring consistent product quality and process efficiency.
High-Quality After-Sales Service
We provide long-term mold maintenance and repair services. Our customer support team maintains regular communication with clients, promptly addresses inquiries, and ensures comprehensive after-sales support throughout the product lifecycle.
Parameter
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Tensile strength: |
16Mpa |
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Elongation at break %: |
Maximum 300% |
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Density: |
1.2g/cm ³ |
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Hardness range: |
50-90 Shore A (70 Shore A is the most commonly used) |
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Size: |
Customized |
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Color: |
Customized |
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Service: |
OEM/ODM, Customized |
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Sample: |
Available |
Types of O Ring
The O Ring produced by our company mainly include the following types:
Fluorine Rubber O Ring
Fluororubber(FKM) o- rings are mainly used for reliable sealing of liquids, gases and other media under extreme working conditions such as high temperature, low temperature and strong corrosion.
Silicone O Ring Seal
Silicone (VMQ) O-rings are composed of silicon, oxygen, hydrogen and carbon. They are odorless and tasteless, and resistant to oxygen, ozone, ultraviolet rays, mineral oil, vegetable oil, dilute salt solutions, engine oil, transmission oil, non-petroleum-based brake fluid, fuel oil and high-molecular-weight chlorinated aromatic hydrocarbons.
Nitirle O- Rings
Nitrile butadiene rubber (NBR) O-rings are elastomer seals copolymerized from butadiene and acrylonitrile. They have excellent oil resistance (including mineral oil, vegetable oil, fuel oil, etc.) and also have good resistance to solvents, hydraulic oil, etc.
Advantages of O Ring
Multiple Sizes
Rubber O-rings come in an extensive range of sizes, shapes, and configurations, from those small enough to fit in a pen to those large enough to seal pipelines.
Proper Hardness
While hardness is crucial for various applications, the durometer of rubber O-rings can be adjusted to achieve the desired texture for each specific use.
Simple Structure and Design
All rubber O-rings, whether customized or standard, feature a very simple structure and design. This simplicity ensures that they are easy to install and replace, regardless of the application.
Self Seating
Due to their simplicity, rubber O-rings self-seat without requiring any instruments or tool adjustments, which also means they typically require minimal to no maintenance.
Tight Seal
The primary function of a rubber O-ring is to create a tight and secure seal that prevents leakage. This key attribute is why rubber O-rings continue to be widely used.
Cost Effective
Among the materials essential for complex operations, rubber O-rings are the least expensive and most readily accessible.
Transportation
Transportation industries are frequently exposed to abrasive and extreme temperatures. Industries like aerospace, heavy-duty trucking operations, and automotive mechanisms cannot operate effectively with polymer-based and silicone O-rings. Engines, fuel systems, and various propellants also consist of O-ring materials.
Medical
O-rings are indispensable in the pharmaceutical and medical industries providing syringes, filtrations, and various connecting pump components.
Oil and Gas
Operations in oil and gas are a hassle due to intense exposure to pressures, aggressive fluids, high-end temperatures, chemicals, and many more dangerous atmospheres. Thus, there is a need for sealing that is resistant to these abnormal conditions. O-rings are the correct fit for the job.
Food and Beverage
rings are an FDA-approved material for hygienic and safe food processing. They are not hazardous to the body. They prevent degrading wastage by decreasing the rate of wear and tear of cooking products.
Difference Between Silicone O Ring and Rubber O Ring
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Feature |
Silicone O Ring |
Rubber O Ring |
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Temperature Resistance |
-75°F to 450°F (-60°C to 232°C) |
-40°F to 212°F (-40°C to 100°C) |
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Durability |
High (resistant to UV, ozone, weathering) |
Moderate (excellent wear resistance) |
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Chemical Resistance |
Excellent (resistant to many chemicals) |
Good (especially for oils and fuels) |
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Cost |
Higher |
Lower |
O Ring Installation Precautions
Size Matters
Use the right size O-ring for each unique assembly. O-rings that are too small are more prone to tearing and breakage. O-rings that are too large will not provide an adequate seal.
Avoid Overstretching
Each O-ring has a maximum stretch point. Overstretching can cause O-rings to break or tear during assembly or use. Engineers need to ensure that the stretch does not go beyond the maximum elongation of the O-ring. It’s also important to stretch the O-ring evenly, not just on one side or the other.
Slide, Don’t Roll
Rolling an O-ring down a shaft for installation leads to spiraling. Spiral wound O-rings cannot be properly installed and their functionality will be limited. This can result in leaks and/or damage to the finished assembly. Sliding the O-ring into place, rather than rolling it, helps avoid spiraling.
Ease O-rings Over Threads
O-rings are often mated with threaded parts. The threads can easily tear the rubber O-rings. Covering the threads with masking tape during installation and using an assembly lubricant can help protect the O-ring from nicks and tears.
Keep Away From Sharp Edges
Some mated parts may also have sharp corners or edges that can damage O-rings. Sometimes these tears are so small they are not visible, resulting in leakage problems later on. Avoid forcing O-rings onto sharp corners and edges. Lubricating the O-rings makes it easier to slide them into place.
Packaging and Shipping
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Packaging |
Plastic bag, Carton |
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Shipping |
Air freight, Sea freight, Train Express |
Our Factory
The company is located in Tianjin. Since its establishment, the company has continuously cultivated new employees and absorbed innovative ideas.
