Oil Resistant NBR Automotive Fuel Hose and HY-RH-641

Application

The HY-RH-641 is an oil-resistant NBR automotive fuel hose, available in NBR, Silicone and EPDM.

NBR's oil and fuel resistance is what makes it the fuel-line choice, with reinforcement and inner diameter confirmed per application.

Application scenarios

• Automotive fuel lines, where NBR's fuel resistance is the deciding factor.
• Oil transfer circuits, where the compound must resist oil swelling.
• Markets with hot climates, where NBR holds up under fuel and oil at temperature.

Technical notes

• NBR resists oil and fuel, which is why it is the fuel-line compound.
• Reinforcement lets the hose hold pressure and vacuum without collapsing.
• Compound and inner diameter are confirmed per application, since a hose that swells or hardens under fuel is a failure risk.

Procurement notes

• For fuel-system importers this is the NBR fuel line — specify the compound, inner diameter and working pressure up front.
• Within the rubber-hoses category, the HY-RH-641 is the NBR fuel entry, distinct from the HY-RH-603 NBR line and the EPDM/silicone lines — confirm the application rather than interchanging.

Selection notes

• Specify NBR for fuel and oil, and confirm the inner diameter and reinforcement.
• State the working temperature and pressure.
• Request the dimensional tolerance on the bore for batch orders.

Maintenance

• Inspect for swelling, hardening or cracks in fuel service.
• Replace on a time or mileage schedule rather than waiting for failure.
• Confirm the clamps are tight and the hose is not kinked.