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.

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 or contact our engineering support team with your system details.

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, and always verify the O-ring sits properly in the groove without twists before final assembly.

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 commonly found in industrial machinery, construction equipment, and manufacturing systems.

Yes, we provide complimentary technical support for gland design and O-ring selection. Our engineering team can assist with groove design recommendations, clearance calculations, and material selection for your specific application. For custom requirements or complex applications, we offer detailed technical consultation to ensure optimal sealing performance. Contact our technical support with your application details for personalized assistance.