❓ NBR O-Ring FAQs

🔍 Why choose 8.6mm cross-section NBR O-rings?

The 8.6mm cross-section is specifically designed for high-pressure applications where standard, thinner O-rings might extrude or fail. The thicker cross-section provides greater resistance to extrusion under pressure, improved durability in dynamic applications, and better compensation for gland imperfections. This makes them ideal for hydraulic systems, heavy machinery, and industrial equipment operating at elevated pressures.

🛠️ What pressure can these O-rings handle?

Our 8.6mm NBR O-rings with 70A hardness are suitable for high-pressure applications, typically handling pressures up to 5000 psi (345 bar) or higher, depending on groove design, clearance, and operating temperature. The thick cross-section provides excellent extrusion resistance. For specific pressure ratings in your application, consult our technical guidelines.

📐 How do I install thick cross-section O-rings properly?

Installing 8.6mm O-rings requires proper technique to avoid twisting or damaging the seal. Use O-ring installation tools, lubricate with compatible fluid, and avoid stretching beyond recommended limits. For large diameters, use a rolling or spiraling technique rather than stretching. Ensure the installation path is free of sharp edges.

🏭 Are these suitable for hydraulic fluid applications?

Yes, these NBR O-rings are excellent for hydraulic applications. NBR material offers outstanding resistance to petroleum-based hydraulic fluids, including mineral oils, synthetic hydraulic fluids, and biodegradable options. The 8.6mm cross-section provides the necessary extrusion resistance for high-pressure hydraulic systems.

📦 What sizes are available in this NBR O-ring collection?

We offer a comprehensive range of sizes from 19mm to 982mm inner diameter, all with the heavy-duty 8.6mm cross-section. This wide range ensures you can find the perfect seal for various industrial and hydraulic applications.