Product Description

Hengshui Speed Drive Technology Co., Ltd.—HaoFa Racing Braided PTFE Hose Assemblies represent the pinnacle of fluid transfer technology. Unlike conventional rubber hoses, PTFE (Polytetrafluoroethylene) inner liners deliver near-universal chemical compatibility, zero fuel vapor permeation, and an extraordinary operating temperature range from -65°C to +260°C (-85°F to +500°F)—far exceeding the limits of rubber-based alternatives. The smooth-bore PTFE liner minimizes flow restriction, making these assemblies the preferred choice for high-flow fuel systems, methanol injection, nitrous oxide delivery, and high-temperature oil circuits where every PSI of pressure drop matters. The inner PTFE tube is wrapped in a double-layer 304 stainless steel outer braid that provides structural reinforcement, burst protection, and abrasion resistance while maintaining flexibility for tight engine bay routing. Each assembly is terminated with precision-machined 6061-T6 aluminum AN fittings featuring gold anodized swivel nuts and 37° flare seats, ensuring leak-free connections across the full pressure and temperature range. Factory-crimped and individually pressure-tested, these assemblies are ready to install with no field assembly required. Available in AN-3 through AN-16 sizes in standard and custom lengths.

Braided PTFE Hose Assembly with 90° Gold AN Fittings

Key Features

• Smooth-bore PTFE inner liner — near-zero flow restriction, universal chemical compatibility, and zero fuel vapor permeation for cleaner engine bays and safer installations
• Double-layer 304 stainless steel outer braid — provides structural integrity, burst protection to 9,000 psi (AN-4/-6), and abrasion resistance in high-temperature environments
• Extreme temperature capability — operates continuously from -65°C to +260°C (-85°F to +500°F), covering cryogenic to turbocharger-hot conditions
• Gold anodized AN swivel fittings — CNC-machined 6061-T6 aluminum with 37° flare seats for tool-free, leak-free installation on standard AN male adapters
• Factory-crimped and pressure-tested — each assembly is hydrostatically tested at 1.5× working pressure with individual traceability
• Zero permeation performance — PTFE liner prevents fuel vapor escape, eliminating the fuel smell common with rubber hoses and meeting stringent emissions requirements
• AN-standard sizing — available in AN-3 through AN-16 with full flow 90° elbow (standard), straight, 45°, and 120° fitting options
• Lightweight construction — approximately 40% lighter than equivalent rubber/stainless assemblies, reducing mass in weight-critical motorsport applications

Technical Specifications

Materials & Finish

The inner liner is extruded from virgin PTFE (Polytetrafluoroethylene), selected for its unmatched chemical inertness, temperature range, and zero-permeation characteristics. PTFE is the only commonly available hose liner material compatible with all automotive fuels including ethanol blends (E85), methanol, and nitromethane without degradation, swelling, or vapor escape. The outer braid consists of two layers of tightly woven 304 stainless steel wire, optimized for burst protection and flexibility. Fittings are CNC-machined from 6061-T6 aluminum billet—bodies are black anodized for corrosion resistance and visual contrast, while swivel nuts are gold anodized for easy identification. The 37° flare seat is precision-ground to SAE J514 / ISO 8434 standards for reliable metal-to-metal sealing. Each assembly receives a unique serial number for full lot traceability back to PTFE extrusion batch and braid wire coil.

Applications

• Motorsport and racing fuel delivery systems (gasoline, E85, methanol, nitromethane)
• High-performance engine oil cooler and dry sump lines
• Turbocharger oil feed and coolant supply/return lines
• Nitrous oxide delivery systems requiring high-pressure integrity
• Aerospace hydraulic and fuel transfer applications
• Automotive brake fluid lines requiring zero moisture absorption
• Chemical processing and laboratory fluid transfer
• Marine fuel systems requiring ethanol-resistant fuel lines
• Motorcycle and powersports high-temperature brake and clutch lines

Customization Options

Hengshui Speed Drive Technology Co., Ltd.—HaoFa Racing supports full customization. Custom AN sizes outside the standard -4 through -12 range (up to AN-16 and AN-20) can be produced. Straight, 45°, 120°, 150°, and 180° fitting angles are available. PTFE smooth bore can be upgraded to conductive PTFE (carbon-filled) for static dissipation in fuel systems. Outer braid can be supplied in stainless steel (standard) or with an additional clear or colored PVC jacket for abrasion and chemical protection. Fitting finishes including full gold, full black, red/blue anodized, and raw aluminum are available. Custom laser engraving on fittings and custom-printed heat-shrink identification sleeves are supported. MOQ for fully custom configurations is 50 assemblies.

Packing & Logistics

Each assembly is individually sealed in a PE protective sleeve with dust caps on both fitting ends, labeled with part number, AN size, length, pressure rating, and serial number, and packed in export-grade corrugated master cartons. Longer assemblies coiled in protective figure-eight packaging. Bulk orders shipped on pallets with edge protectors. Port: Qingdao or Tianjin. Incoterms: FOB, CIF, CFR.

Certifications

FAQ

Q: Why choose PTFE over rubber for fuel lines?

A: PTFE offers three decisive advantages: zero fuel vapor permeation (no fuel smell, meets emissions standards), universal chemical compatibility (safe with E85, methanol, and all pump fuels), and a vastly wider temperature range (-65°C to +260°C vs -40°C to +120°C for rubber). For high-performance and motorsport applications, PTFE is the professional standard.

Q: Are PTFE assemblies more fragile than rubber?

A: No. The double-layer 304 stainless steel outer braid provides structural protection. While PTFE itself has a higher minimum bend radius than rubber (due to its lower elasticity), the overall assembly is extremely durable with burst pressures up to 9,000 psi in AN-4 and AN-6 sizes.

Q: Can PTFE hose handle brake fluid?

A: Yes. PTFE is fully compatible with DOT 3, DOT 4, DOT 5, and DOT 5.1 brake fluids. Unlike rubber, PTFE does not absorb moisture from the atmosphere, making it the preferred choice for long-term brake system reliability.

Q: What’s the difference between standard and conductive PTFE?

A: Standard PTFE is electrically insulating. For fuel systems carrying high-flow rates where static charge can build up, conductive PTFE (carbon-filled, black inner bore) safely dissipates static electricity to the end fittings. Specify conductive PTFE if your application involves high-flow fuel transfer.

Q: What information do you need for a quotation?

A: Please provide: AN size or inside diameter, assembly length end-to-end, fitting angle on each end (90°, straight, 45°, etc.), PTFE type preference (standard or conductive), total quantity, and shipping terms (FOB/CIF). Response within 24 hours.