5-Layer Nylon Tube for Automotive Fuel Systems

Introduction

Our 5-layer nylon tubes are engineered for automotive fuel delivery and evaporative emission control (EVAP) systems, providing reliable fuel resistance, mechanical durability, and reduced fuel vapor permeation.

Featuring an advanced PA12 / Adhesive / EVOH / Adhesive / PA12 multilayer structure, these tubes combine the flexibility and durability of PA12 with the excellent fuel vapor barrier properties of EVOH. This construction helps meet the demanding requirements of modern automotive fuel systems.

With extensive experience in automotive tubing manufacturing, Jinyuan provides customized tubing solutions for OEM and aftermarket applications, supporting different vehicle platforms and fuel system configurations.

Key Features

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Advanced Five-Layer Structure
Combines PA12 inner and outer layers, adhesive bonding layers, and an EVOH barrier layer for enhanced functional performance.

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Excellent Fuel Resistance
PA12 layers provide good resistance to fuels and help maintain tubing durability under suitable operating conditions.

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Reduced Fuel Vapor Permeation
The EVOH barrier layer helps minimize fuel vapor permeation, supporting evaporative emission control requirements.

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Lightweight & Flexible Design
Lightweight construction facilitates routing through compact vehicle layouts and helps simplify installation.

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Reliable Mechanical Performance
Designed to provide suitable strength, flexibility, and resistance to vibration and mechanical stress when properly specified.

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Customizable Tubing Solutions
Tube dimensions, lengths, colors, and configurations can be developed according to customer drawings and application requirements.

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Specification Overview

Final specifications, pressure ratings, temperature limits, fuel compatibility, and permeation performance should be confirmed through product-specific testing and technical validation.

Why Choose Us

Jinyuan specializes in automotive tubing manufacturing, providing customized solutions to meet different vehicle system requirements.

Our manufacturing capabilities and quality management processes support consistent product quality, dimensional control, and reliable production.

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Automotive Manufacturing Experience
Experience in developing tubing products for automotive applications.

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Engineering & Customization Support
Technical communication based on customer drawings, samples, and application requirements.

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Quality-Focused Production
Quality management under IATF 16949 and ISO 9001 certified systems, where applicable to the supplied product and production scope.

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Flexible Project Support
Support for sample development, specification confirmation, product validation, and volume production.

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Long-Term Supply Partnership
Dedicated support for customers seeking dependable automotive tubing suppliers.

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Applications

★ Fuel Delivery Systems

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Fuel supply lines connecting the fuel tank to the engine or fuel delivery components

Fuel feed lines for compatible automotive fuel systems

Fuel tank connection lines

Fuel transfer lines for applications supported by the specified tube design

★ Fuel Tank & Fuel System Connections

Fuel tank outlet and inlet connections, where applicable

Fuel system routing between compatible components

Tubing connections designed according to vehicle platform requirements

★ Passenger Cars & Light Commercial Vehicles

Gasoline vehicle fuel systems

Compatible hybrid vehicle fuel systems

Light commercial vehicle fuel delivery and vapor management systems

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The five-layer PA12/EVOH construction is particularly relevant to automotive fuel and vapor applications where fuel compatibility and reduced permeation are important. Suitability for each application depends on fuel type, operating pressure, temperature, and applicable OEM requirements.

Quality & Compliance

Jinyuan emphasizes quality control throughout the manufacturing process to support the reliability of automotive tubing products.

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Quality management under IATF 16949 and ISO 9001, subject to the applicable certification scope

Dimensional inspection according to approved specifications

Material and multilayer structure verification

Fuel compatibility testing, where required

Fuel vapor permeation testing according to the applicable customer or regulatory requirements

Pressure and leakage testing, where applicable to the product design

Thermal aging and environmental testing according to project specifications

Technical documentation and test reports available as agreed for individual projects

Applicable standards and regulatory requirements should be confirmed according to the intended vehicle market, fuel system design, and customer specifications.

Customization Options

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Multilayer Structure: PA12 / Adhesive / EVOH / Adhesive / PA12

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Tube Dimensions: Customized inner diameter and outer diameter

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Tube Length: Straight lengths or customized cut lengths

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Tube Configuration: Straight or formed configurations, subject to feasibility

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Color Options: Customized colors, subject to material and manufacturing requirements

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End Connections: Compatible connectors or fittings, subject to design confirmation

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Application Development: Customized solutions based on drawings, samples, or technical specifications

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Project Support: Prototype development and product validation for new applications

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Ordering & Sample Policy

Samples are available upon request to support product evaluation and application validation.

To help us recommend a suitable five-layer nylon tube, please provide the following information where available:

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Tube inner diameter and outer diameter

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Required length and configuration

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Fuel type and intended application

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Operating pressure and temperature

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Required fuel permeation performance or applicable specifications

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Drawings, existing samples, or OEM part numbers

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Sample availability, development lead time, and mass production lead time depend on the product structure, specifications, tooling requirements, and order quantity.

Contact our team to discuss sample arrangements, technical feasibility, and quotation details.

After-Sales & Technical Support

Technical communication during product selection and development

Assistance with dimensional and material specification confirmation

Sample evaluation and improvement support

Quality documentation and test reports, as agreed for each project 

Support for product changes and ongoing production requirements

Long-term cooperation for automotive tubing supply programs

Call to Action

Looking for a reliable five-layer nylon tube for automotive fuel delivery or EVAP systems?

Jinyuan provides customized PA12/EVOH multilayer tubing solutions designed to support fuel compatibility, reduced vapor permeation, and dependable performance in automotive applications.

Send us your drawings, samples, or technical requirements. Our team will help evaluate your project and provide a suitable tubing solution for your application.

Contact Jinyuan today to discuss your specifications, request samples, or start a new product development project.