Black Fluorine Rubber Fuel Hose — Reliable Petrol & Oil Line for Engine Applications
Fuel line failures don't announce themselves — they show up as leaks, cracks, or swollen hose walls at the worst possible moment. Whether you're rebuilding a carbureted motorcycle, routing oil lines on a small engine, or replacing aging fuel pipe on a diesel generator, you need a hose material that won't degrade when it contacts hydrocarbons day after day. This black fluorine rubber fuel hose is built for exactly those situations, giving mechanics, DIYers, and small-engine technicians a chemically resistant, heat-tolerant option that holds up where standard rubber fails.
Each length is cut from solid-wall fluorine rubber (FKM/Viton-type) tubing in a black finish. Available inner diameters (ID) range from 2mm (≈5/64") to 12mm (≈15/32"), with corresponding outer diameters (OD) from 4mm to 16mm — wall thickness is typically 1–2mm depending on the size selected. Lengths are available in 1 meter (≈3.3 ft), 3 meters (≈9.8 ft), 5 meters (≈16.4 ft), and 10 meters (≈32.8 ft). Select your ID×OD size and length from the variant options above.
Typical use cases include petrol feed and return lines on carbureted motorcycles and ATVs, engine oil breather hoses and crankcase vent lines, fuel pipe replacement on lawn mowers, chainsaws, and small generators, and low-pressure diesel fuel routing in marine or agricultural equipment. The fluorine rubber construction resists fuel permeation and swelling that commonly affects standard NBR or silicone hose in direct fuel contact.
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Compatibility Note: Match the hose ID to your barb fitting's outer diameter. Available sizes: 2×4, 3×5, 3×6, 4×7, 5×8, 6×9, 7×10, 8×12, 10×14, 12×16 (ID×OD in mm). If you are unsure of your fitting size, measure the barb OD before ordering.
✅ Key Features of These Black Fluorine Rubber Fuel Hose Lines
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🧪Fluorine Rubber (FKM) Construction — Resists petrol, diesel, engine oil, and aromatic hydrocarbons that cause standard rubber fuel hose to swell or crack over time.
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🌡️Wide Temperature Range — Typically rated from approximately -20°C (-4°F) to 200°C (392°F), suitable for under-hood engine environments and high-heat routing near exhaust components.
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📏10 ID×OD Size Options — From 2×4mm up to 12×16mm, covering the most common barb fitting sizes used on motorcycles, small engines, and light industrial equipment.
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🔄Four Cut Lengths Available — Order exactly what you need: 1m, 3m, 5m, or 10m. Reduces waste compared to buying fixed-length pre-formed hoses.
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☀️UV & Ozone Resistant — Fluorine rubber generally maintains flexibility and integrity in outdoor and engine-bay environments where ozone and UV exposure accelerate degradation in cheaper hose materials.
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✂️Easy to Cut and Clamp — Solid-wall construction cuts cleanly with a utility knife and secures reliably with standard worm-drive or ear clamps, making it straightforward to install on barb fittings without special tools.
📐 Technical Specifications — Fluorine Rubber Fuel Hose Tube
| Material |
Fluorine rubber (FKM / Viton-type) |
| Color |
Black |
| Available ID × OD (mm) |
2×4, 3×5, 3×6, 4×7, 5×8, 6×9, 7×10, 8×12, 10×14, 12×16 |
| Available ID × OD (inches, approx.) |
5/64"×5/32", 1/8"×13/64", 1/8"×15/64", 5/32"×9/32", 13/64"×5/16", 15/64"×23/64", 9/32"×25/64", 5/16"×15/32", 25/64"×35/64", 15/32"×5/8" |
| Wall Thickness |
Typically 1–2mm depending on size (see variant) |
| Available Lengths |
1m (≈3.3 ft), 3m (≈9.8 ft), 5m (≈16.4 ft), 10m (≈32.8 ft) |
| Temperature Range |
Typically -20°C to 200°C (-4°F to 392°F) |
| Fluid Compatibility |
Petrol, diesel, engine oil, hydraulic fluid, aromatic hydrocarbons (not for ketones or brake fluid) |
| Working Pressure |
See variant options — contact us to confirm for high-pressure applications |
| Bend Radius |
Contact us to confirm for your specific size |
| End Type |
Cut-to-length, plain ends (use with barb fittings and hose clamps) |
| Country of Origin |
China |
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Spec Confirmation: Exact working pressure and minimum bend radius vary by ID×OD size. If your application involves pressurized fuel injection or tight routing, contact us before ordering to confirm suitability.
❓ Frequently Asked Questions
How do I choose the right hose size?
Match the hose ID (inner diameter) to the outer diameter of your barb fitting. For example, a 6mm barb typically pairs with the 6×9mm hose. Sizes range from 2mm ID (≈5/64") up to 12mm ID (≈15/32"). If replacing an existing hose, measure the old hose's ID and OD directly, or measure the barb OD and select the matching ID. When in between sizes, size down for a tighter, more secure fit.
What fuels and fluids is this hose compatible with?
Fluorine rubber (FKM/Viton-type) is generally compatible with petrol (gasoline), diesel, biodiesel blends, engine oil, hydraulic fluid, and most aromatic hydrocarbons. It is not recommended for ketones (e.g., acetone, MEK), esters, or brake fluid. Always verify chemical compatibility for your specific fluid if you are unsure.
What temperature range can this hose handle?
Fluorine rubber hose typically handles continuous service from approximately -20°C (-4°F) to 200°C (392°F). This makes it suitable for most under-hood engine environments, including routing near exhaust manifolds. For applications exceeding these temperatures, contact us to confirm suitability.
Can this hose be used outdoors or in an exposed engine bay?
Yes. Fluorine rubber is generally resistant to UV exposure, ozone, and weathering — properties that cause standard rubber fuel hose to crack and harden over time. It is suitable for outdoor and engine-bay installations. For prolonged direct sunlight exposure in extreme climates, a protective sleeve or heat shield is still a good practice.
What is the working pressure of this hose?
Working pressure varies by wall thickness and ID size. Smaller-diameter hoses (e.g., 2×4mm, 3×5mm) typically handle higher pressures relative to their size than larger-bore hoses. For gravity-feed or low-pressure carbureted fuel systems this hose is generally adequate. For high-pressure fuel injection systems, contact us to confirm the specific size's pressure rating before ordering.
How do I cut and install this hose?
Use a sharp utility knife or dedicated hose cutter for a clean, square cut — avoid sawing motions that leave ragged edges. Push the hose firmly onto the barb fitting; a small amount of fuel-safe lubricant (e.g., petroleum jelly) can ease installation. Secure with a worm-drive or ear clamp sized to the hose OD. Avoid sharp bends tighter than the hose's minimum bend radius to prevent kinking and flow restriction.
Is this hose suitable for small engines like lawn mowers, chainsaws, or ATVs?
Yes. The smaller ID sizes — 2×4mm, 3×5mm, and 3×6mm — are commonly used as petrol feed and return lines on carbureted small engines including lawn mowers, chainsaws, leaf blowers, ATVs, and motorcycles. The fluorine rubber material resists the ethanol-blended fuels (E10, E15) that can degrade standard rubber hose over time.
🛒 Select your ID×OD size and length above, then add to cart — ships from our US warehouse.
