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Is the nitrile rubber O-ring oil-resistant?

Is the nitrile rubber O-ring oil-resistant?

Analysis of oil resistance performance! Application scenarios and selection skills of nitrile rubber O-rings

Bosses who purchase mechanical parts and hydraulic equipment, pay attention! When choosing oil-resistant seals, you often wonder whether nitrile rubber O-rings are reliable. In fact, as a classic oil-resistant material, nitrile rubber performs excellently in most oil medium scenarios, but the selection needs to be based on specific working conditions to avoid mistakes!

The oil resistance of nitrile rubber O-rings stems from their molecular structure. They have good resistance to non-polar oils such as mineral oil, hydraulic oil, and lubricating oil. Within the temperature range of -40℃ to 120℃, they can maintain stable sealing performance, and are widely applicable to oil sealing scenarios in the automotive, machinery, hardware and other industries. However, it should be noted that their resistance to gasoline and strong polar solvents is weak. For such working conditions, fluororubber materials are recommended.

There are 3 key points for B-end selection: first, confirm the type of oil medium. For non-polar oils, nitrile rubber O-rings are preferred; for polar oils, the material needs to be replaced. Second, verify the temperature resistance and pressure parameters. For high-temperature scenarios exceeding 120℃ or high-pressure scenarios, a backup ring should be used. Third, ask for test reports to ensure compliance with the GB/T 3452.1 standard and qualified oil resistance performance test certificates.

Before bulk purchasing, it is essential to conduct small-scale tests to simulate actual working conditions and test the sealing effect and durability. This avoids mass leakage due to material mismatch, which may cause cost losses and impact on brand reputation.

Whether you are a mechanical parts wholesaler, equipment manufacturer, or hydraulic system purchaser, worried about improper selection of oil-resistant O-rings? Click on the online customer service or call directly, inform us of the working condition parameters, and we will provide sealing solutions with multiple materials such as nitrile rubber, support the verification of test reports and small-batch trial orders, to help you select the right type accurately!

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Factory seal keeps leaking? Choose Aobo silicone O-rings to solve 90% of leakage problems

Is the original factory sealing ring always leaking? Choose Aobo silicone O-rings to solve 90% of water leakage problems.

Is the O-ring always breaking? Aobo Silicone teaches you how to choose the right O-ring to extend its service life

 

Many factories encounter issues such as “leakage, aging cracks, and inability to withstand high temperatures and pressures” just a few days after purchasing O-ring seals. However, Engineer Mr. Wang from an automotive parts factory in Dongguan has no such worries—ever since switching to Aobo Silicone’s O-rings, leakage failures in engine oil seals and brake systems have almost dropped to zero. Why are Aobo Silicone’s O-rings so durable? The key lies in two factors: first, their innovative sealing design—when the circular cross-section is compressed, it can tightly lock even in narrow spaces, preventing the infiltration of oil, water, or gas. Second, the diversity of their materials—fluororubber can withstand high temperatures of 200°C and chemical corrosion, making it ideal for automotive engines; silicone material provides high cleanliness, suitable for medical syringes and food machinery; metal composite materials can withstand ultra-high pressure, even usable in aerospace hydraulic systems. From preventing leakage in automotive fuel systems to air sealing in household appliance compressors, from critical aerospace seals to liquid control in general machinery, Aobo Silicone’s O-rings can meet your needs. For example, a dishwasher manufacturer in Shandong used to frequently encounter leakage problems with standard O-rings, but after switching to Aobo Silicone’s products, the repair and rework rate decreased by 45%.

Still struggling with O-ring leaks and poor durability? Ober Silicone specializes in sealing solutions with 23 years of experience, offering customizable sizes and materials. Click to inquire—achieve stable and cost-effective equipment sealing!

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