Applications of EMS-Grivory Grilamid® L 25 W 40 Nylon 12, Conditioned in Industrial Manufacturing

As a direct manufacturer of high-performance polyamides, we supply Grilamid® L 25 W 40 Nylon 12, conditioned, for advanced industry applications across demanding sectors. Below, we outline key areas where this material delivers core processing and compliance advantages in real downstream production environments.

1. Fuel and Brake Line Tubing for Automotive

Automotive OEMs and T1 integrators use this specific polyamide grade in multilayer fuel and brake lines. It provides chemical resistance to oils, fuels, and aggressive fluids, while offering dimensional stability and cold impact strength. The resin’s low moisture uptake supports tight burst pressure and dimensional gauges throughout assembly and service life. Process engineers select this material for continuous extrusion in high-volume lines, supporting complex tube structures with co-extruded barrier layers as needed for new emission legislation.

Industry compliance standards

• SAE J2260 (Non-metallic Fuel System Tubing)
• ISO 7628 (Road Vehicles—Non-metallic Tubing for Use in Air Brake Systems)
• FMVSS 301 (Federal Motor Vehicle Safety Standard—Fuel System Integrity)
• Automaker-specific fluid compatibility and outgassing protocols (VW TL 52643, GM GMW 15702)

Typical usage ratio

• Used as the main polyamide layer at 60–100% in mono- or multilayer fuel/brake tube constructions
• Ratio adjusted based on inner/outer barrier layer selection and mechanical strength requirements

Downstream process integration

• Dry blend or direct-feed chip material to single or multilayer extruders
• Integrated in continuous tube drawing and annealing lines with in-line dimensional control
• Compatible with ultrasonic, infrared, or chemical joining post-extrusion

Final product types

• Fuel supply lines
• Brake hydraulic tubing
• SCR (Selective Catalytic Reduction) urea lines
• Quick connector assemblies for fluid systems

2. Pneumatic and Hydraulic Control Tubing

Industrial machinery and automation OEMs employ this nylon 12 grade for manufacturing flexible pneumatic and hydraulic control lines. Its hydrolysis resistance and flexibility at low temperatures make it suitable for continuous use in production equipment, robotics, and mobile machinery. The material’s resistance to cracking under dynamic load and stress is key for systems with frequent movement, quick coupling, and vibration. Color masterbatch additions remain consistent in this matrix for visual coding in equipment.

Industry compliance standards

• ISO 8030 (Pneumatic Fluid Power—Polyamide and Polyurethane Tubing)
• DIN 74324 (Automotive—Thermoplastic Pipes for Pneumatic Equipment)
• Machinery Directive 2006/42/EC (EU—Safe Integration of Fluid Systems)
• REACH and RoHS safe for in-machine component use

Typical usage ratio

• Blended at 80–100% for tubing, with additive package adjusted for UV/color needs
• Reduced content with inner lining or co-extruded sheath for specific chemical resistance cases

Downstream process integration

• Fed to high-speed tube extruders with direct coloring and online wall gauge control
• Used in precision cutting and coil winding automation after extrusion
• Surface-treated for text labeling, laser marking, or serial coding

Final product types

• Pneumatic control lines
• Hydraulic micro-hoses
• Automated machinery air/electro-pneumatic signal tubing
• Color-coded maintenance/spare tubing kits

3. Medical-Grade Catheter and Diagnostic Tubing (Non-Implant)

Specialty medical device and diagnostic OEMs select this conditioned polyamide for single-use fluid transfer, sampling, and catheter guide tubes. The low extractable content and absence of plasticizers have driven adoption in regulated healthcare environments. Dimensional stability, precise flow path control, and kink resistance enable use in peristaltic pumps, sample conduits, and clinical collection sets, while supporting required sterilization cycles (EtO, gamma, or autoclave).

Industry compliance standards

• ISO 10993 (Biological Evaluation of Medical Devices)
• USP Class VI (Biological Reactivity Test, Plastics)
• Ph. Eur. 3.1.5 (Polyamide for Containers and Closures for Parenterals, Europe)
• EU Regulation 2017/745 (Medical Devices Regulation for non-implant components)

Typical usage ratio

• Formulated as principal polymer at 85–100% in tubing, minor color or lubricity masterbatch allowed per biocompatibility testing
• Ratio adapted with radiation stabilizers for gamma sterilization upon request

Downstream process integration

• Precondition and dry resin for stable extrusion at high surface finish
• Precision extrusion into thin-wall tubing with automatic OD/ID monitoring
• Compatible with RF or ultrasonic welding for connector bonding

Final product types

• Fluid sample catheters (in vitro diagnostics)
• Disposable culture tubes
• Medical-grade peristaltic pump tubes
• IV or blood sampling conduits (non-implant systems)

4. Cable Sheathing and Fiber Optic Protective Jackets

Cable manufacturers utilize this nylon 12 grade for outer sheaths and protective jackets in high-speed communications, industrial sensor wiring, and underground fiber optic installations. Its long-term resistance to hydrolysis, abrasives, and stress cracking under temperature cycling is essential for cable functionality in exposed or buried environments. The resin permits easy color compounding for signal identification and offers stable dielectric properties, avoiding signal loss in communication lines.

Industry compliance standards

• UL 1581 (Reference Standard for Electrical Wire, Cable, and Flexible Cords)
• IEC 60794-1-2 (Optical Fiber Cables—Mechanical Test Methods)
• TIA/EIA-568 (Commercial Building Telecommunications Cabling Standard, US)
• RoHS and REACH compliant for electrical applications

Typical usage ratio

• Used at 90–100% as primary outer sheath; reduced to 60–80% with added fire-retardant or UV stabilizer masterbatch as project requires
• Exact ratio selected based on cable diameter, sheath wall thickness, and installation requirements

Downstream process integration

• Melt-compounded and extruded as sheath over insulated cable/fiber bundles
• Processed in line with armoring or water-blocking tape layer as specified
• Finish post-extrusion processes include laser printing and coiling

Final product types

• Fiber optic outer jackets (direct-buried)
• Signal/data transmission cable sheaths (industrial and telecom)
• Sensor wire harnesses for automotive/industrial equipment
• Underwater or harsh environment cable covers

5. Sport and Leisure Equipment Components

Manufacturers of high-end sports gear and technical leisure goods process this nylon 12 for durability in dynamic load parts and light structural assemblies. It exhibits high impact energy absorption, dimensional retention, and weather resistance required for sports eyewear frames, cycling equipment, and ski binding elements exposed to outdoor use. The resin’s clarity and chemical resistance support vivid coloration and graphic integration for consumer branding in premium product series.

Industry compliance standards

• ISO 4210-7 (Bicycles—Safety Requirements for Frames & Components)
• EN 174 (Helmets, Eye and Face Protection for Skiers)
• REACH Annex XVII (No restricted substances for this grade)
• Consumer Product Safety Commission (CPSC) guidelines for U.S. products

Typical usage ratio

• Utilized as principal matrix at 70–100% for injection-molded frames and structural inserts
• Lower content used in blends with impact modifiers or color masterbatch according to target performance and aesthetics

Downstream process integration

• Direct injection molding into frames, buckles, and support parts
• In-mold coloring with stable pigmentation under UV
• Compatible with overmolding for grip zones or finishing details

Final product types

• Sports eyewear frames and arms
• Cycling pedal bodies and shoe inserts
• Ski boot buckles, fitting inserts
• Outdoor gear clips and safety catches

6. Gas and Water Supply Pipe Systems

Utility and infrastructure installers specify this grade of nylon 12 for flexible underground gas and potable water piping, especially in renovation projects and difficult-to-access routing. Its high stress crack resistance, low gas permeability, and proven durability for long service life have enabled approvals in public utility markets. The material extrudes smoothly into large-diameter pipe while maintaining roundness and consistent wall thickness for joining and field welding. Accelerated aging and field exposure trials validate its function in permanent installation.

Industry compliance standards

• DVGW VP 642 (Flexible Polyamide Pipes for Gas Installations, Germany)
• ISO 16486 (Plastics Piping for Gaseous Fuels—Polyamide 12 Systems)
• KIWA K21011 (Polyamide for Drinking Water Pipe Systems, Netherlands)
• NSF/ANSI/CAN 61 (Drinking Water System Components—Health Effects, North America)

Typical usage ratio

• Main polyamide 12 resin at 85–100% in pipe layer structure
• Barrier, color, or UV additives up to 15% total in multi-layer or marked pipe configurations

Downstream process integration

• Batch drying and precise feed into double or triple-screw extrusion lines
• Pipe diameter calibrated with vacuum sizing; wall thickness laser-gauged in line
• Post-extrusion saw cutting and hot-melt socket welding or electrofusion joining

Final product types

• Underground gas supply pipes
• Potable water ring main pipes
• Household flexible water inlets
• Risers and saddle connector pipes