Major Challenges Facing Fuel Delivery Systems:
Leakage Risk: Poor-quality hoses often burst under high pressure, causing safety incidents (over 2,000 reported leakage accidents per year in the industry).
Ethanol Corrosion: E10/E15 fuel causes regular rubber hoses to harden and crack within 3 months, increasing maintenance costs by 40%.
Cold Weather Brittleness: At -20°C, most hoses lose flexibility; vehicle owners in cold regions may replace hoses 2–3 times per year.
Excessive Vapor Permeation: Traditional hoses exceed new environmental standards by 3x, leading to potential heavy fines.
Compatibility Issues: Hybrid and alternative fuel vehicles require hoses that can handle gasoline, methanol, and high heat.
Why Do All Top 10 Global Automakers Choose SAE J30 R7 Hose?
Superior Corrosion Resistance: Our proprietary rubber formula resists E10/E15 fuel—300% longer service life than standard hoses.
Zero-Emission Technology: Reduces fuel vapor emissions by 90% compared to regular hoses—save up to $2,000/year in environmental fines.
Extreme Cold Performance: Same material used in Siberian oilfields—remains flexible at -40°C with no cracking.
High Heat Stability: Tested 8,000+ hours under 125°C desert conditions with no aging or deformation—truly heat-proof!
PAISHUN HOSE SAE J30 R7 – The Disruptive Solution
1. Military-Grade Burst Resistance
Braided reinforcement prevents kinking and keeps hose shape
Burst pressure exceeds 3MPa, outperforming SAE standards
300,000+ pressure cycles tested, 3x the industry average
2. Exclusive Ethanol-Resistant Formula
NBR rubber lining for superior chemical resistance
Less than 5% volume expansion after 1,000 hours in E15 fuel (vs. 15%+ for competitors)
Fully compatible with E10 / E15 / E85 fuels worldwide
| No. |
Test Item |
Test Condition |
Standard Spec. |
Measured Value |
| 1.3 |
Changes after being Immeraged in Fuel C |
| Tensile Change (% ) |
Fuel C:23℃×48h |
≥-45 |
-23.4 |
|
Elongation Change
( %)
|
≥-45 |
-21.3 |
| Volume Change ( % ) |
0～+50 |
+21.4 |
| 1.4 |
Changes after being Immeraged in IRM903 Oil |
| Tensile Change (%) |
IRM903 Oil: 125℃×70h |
≥-50 |
-31.1 |
|
Elongation Change
(% )
|
≥-50 |
-40 |
| Volume Change (% ) |
-5～+30 |
-5 |
| 1.5 |
Changes after being Immeraged in Oxygenated Fuel Resistance |
| Tensile Change (%) |
Fuel G:23℃×70h |
≥-45 |
-20.0 |
|
Elongation Change
(% )
|
≥-45 |
-21.3 |
| Volume Change (% ) |
0～+50 |
+23.7 |
3. All-Weather Durability
Survives -40°C bend tests with no cracking (certified by 3rd-party lab)
Maintains over 90% tensile strength at 120°C
Ideal for:
Cold-chain delivery trucks
Desert mining equipment
Tropical port construction machines
| No. |
Test Item |
Test Condition |
Standard Spec. |
Measured Value |
| 1 |
Tube Rubber Properties |
| 1.1 |
Original Tensile (Mpa) |
--- |
≥8 |
9.74 |
| Original Elongation (%) |
≥200 |
356 |
| 1.2 |
Dry Heat Resistance |
| Tensile Change ( % ) |
125℃×70h |
≥-20 |
+38.8 |
|
Elongation Change
(% )
|
≥-60 |
-41.0 |
4. Zero-Permeation Eco Design
Fuel vapor permeation rate: < 0.08 g/m²/day (vs. China standard: 0.6 g)
Certified by EU REACH and US CARB
Helps cut 80% of environmental compliance costs
| No. |
Test Item |
Test Condition |
Standard Spec. |
Measured Value |
| 3 |
Permeation Resistance (resist to fuel C) |
| 3.1 |
Permeation Resistance |
test in fuel C for at least 8 days. |
550 gm/m 2 /day |
23.50 gm/m 2 /day |
Real-World Cost Comparison
| Item |
Regular Hose |
SAE J30 R7 |
| Replacements/year |
3 times |
0.5 times |
| Repair cost/time |
$150 |
$80 |
| Fuel loss/year |
$2,000+ |
$0 |
| Total cost (3 years) |
$6,450 |
$240 |
Typical Applications
Passenger Vehicles: Fuel lines and fuel pump connections
Commercial Vehicles: Diesel engine fuel systems
Construction Machinery: Excavators, loaders, etc.
Generators: Diesel generator fuel delivery
Fueling Equipment: Gas station transfer hoses
Contact us now for a customized SAE J30 R7 hose solution!
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