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Zeus
PFX Flex™ Sub-Lite-Wall™
Engineered as an alternative to film-cast PTFE, PFX Flex™ Sub-Lite-Wall™ is a next-gen catheter liner that delivers proven lubricity, enhanced bond strength, and expanded sterilization options – all without PFAS.1
Sustainability and Compliance Without Compromise
Engineered from a non-fluorinated polymer, PFX Flex Sub-Lite-Wall liners have been shown to achieve PTFE-like performance2 with inherent sustainability benefits – delivering design freedom, manufacturing flexibility, and compliance confidence in a world moving beyond PFAS.
PFX Platform
More than a Material Breakthrough, PFX is a Strategic Advantage
The PFX platform brings together a portfolio of non-fluorinated polymer solutions, delivering the trusted performance you depend on with additional sustainability and compliance advantages. The result: greater design freedom, fewer manufacturing constraints, and performance continuity across your value chain.
Lower Environmental and Regulatory Risk
The PFX platform helps reduce environmental impact and regulatory uncertainty, supporting product integrity, brand confidence, and broader sustainability goals.
Reliable Production. Future-Ready Supply.
Optimized for manufacturing excellence, PFX delivers consistent quality and a future-proof sourcing strategy without compromising performance.
Design Without Limits. Performance Without PFAS.
Engineered for next-generation devices, PFX delivers exceptional design flexibility and versatility to meet the most demanding performance requirements – all without PFAS.1
Built on Science, Not Assumptions
As conversations around “PFAS-free” continue to evolve, Zeus is taking a deliberate, science-based approach grounded in transparency and material integrity. This ensures customers can move forward with confidence, knowing our solutions are built on rigor, not assumptions.
PFX Flex Sub-Lite-Wall liners have been engineered through rigorous testing and production trials, demonstrating consistent performance across multiple catheter applications and manufacturing environments.
Non-Fluorinated Liner for Regulatory Confidence1
PFX Flex is formulated without fluorinated polymers, offering a next-generation liner material designed to align with evolving global regulatory expectations while maintaining the performance and quality OEMs demand.
- Non-fluorinated formulation across materials and supply chain
- Designed to align with existing and emerging PFAS restrictions
- Provides a future-proof alternative to etched PTFE liners in regulated markets
PTFE-Level Lubricity2 — Without PFAS1
PFX Flex delivers PTFE-like lubricity for smooth IDs, controlled movement, and reliable performance.
- No additives or coatings required to achieve lubricity – performance is intrinsic to the material
- Low coefficient of friction comparable to PTFE liners
- Predictable handling for precise control through complex anatomy
- Smooth, consistent IDs for reduced insertion resistance and reliable catheter advancement
Simplifies Assembly with Direct Bonding2 for Greater Reliability
PFX Flex simplifies catheter assembly with a direct covalent bond to thermoplastics – no chemical etching and greater long-term reliability.
- Direct covalent bond to thermoplastics for durable, delamination-resistant assemblies
- Eliminates tie-layer adhesives, reducing process steps and material interfaces
- Synergistic strength: Lamination process results in enhanced system strength as a result of covalent bond
Sterilization Methods Beyond EtO2 for Greater Flexibility
PFX Flex offers sterilization flexibility beyond EtO, enabling alternative pathways to market that align with evolving operational and sustainability priorities.
- Expands sterilization choices without compromising performance
- Compatible with gamma and e-beam sterilization methods
- Maintains performance after EtO sterilization, with stable mechanical and surface properties
PTFE-Like Flexibility2 for Confident Navigation
PFX Flex Sub-Lite-Wall liners offer exceptional flexibility, outperforming traditional PTFE liners, allowing for smooth navigation and precise control through complex anatomies.
- Improved trackability and steerability promote smooth, predictable navigation through complex anatomy
- Maintains flexibility after reflow, supporting consistent performance across a wide range of end-use applications
- Supports accurate, repeatable tip deflection for greater precision and control
High Abrasion Resistance2 Reduces Particulate Risk
PFX Flex Sub-Lite-Wall liners offer high abrasion resistance, helping to minimize particulate generation in catheter assemblies.
- Durable, abrasion-resistant construction that resists scratching, scuffing, and flaking
- Particulate performance comparable to on-market catheters, with no particles detected above 50 µm.
- Supports reliability in applications where particulate sensitivity is critical
Film-Cast Capability up to 0.387″ ID— Expanding Design Possibilities
PFX Flex Sub-Lite-Wall liners can be produced with IDs from 0.013″ – 0.387″ (0.330 mm – 9.830 mm), expanding design flexibility across a wide range of catheter platforms.
- Broad ID range: 0.013″ – 0.387″ (0.330 mm – 9.830 mm) – exceeding current industry offerings for film-cast PTFE by at least three times
- Super-thin, uniform walls: 0.0015″ – 0.003″ (0.038 mm – 0.076 mm) with smooth internal surfaces and dimensional stability
- Supports larger-bore and thin-wall configurations for therapies from neurovascular to structural heart
Coming Soon
PFX Product Roadmap
PFX Catheter Liner
PFX Max™
As the next liner in the PFX portfolio, PFX Max is designed to deliver greater strength, thinner walls, and tighter tolerances for advanced catheter applications where space or precision are critical – all without PFAS.1
PFX Heat Shrink
PFX Peelz™
PFX Peelz redefines heat-shrink performance for catheter manufacturing – a low-friction, reliable, easy-peel release without PFAS.3 Its composition supports improved process efficiency and higher waste-to-energy recovery.
PFX Polyimide
PFX Glide™
Developed as a next-generation alternative to polyimides with lubricious additives, PFX Glide is designed to deliver low friction, strong dielectric strength, and outstanding wear resistance, enhancing catheter deliverability and control.
Resources
Access quick links to all PFX Flex resources — including product datasheets, technical specifications, test reports, brochures, FAQs, and more — all in one place.
Still have questions?
If your question isn’t answered here or you’d like more detailed data, our technical and commercial teams are ready to help.
1 PFX™ liners are made using a non-fluorinated polymer resin alternative to PTFE and without the intentional addition of any per- or polyfluoroalkyl substances (PFAS). Independent third-party laboratory analysis on representative samples of PFX liners has confirmed total fluorine levels of less than 20 ppm in liner samples analyzed.
2 Based on test report, Comparing PFX Flex™ vs. PTFE Catheter Liners. January 2026.
3 PFX™ heat shrink is made using a non-fluorinated polymer resin alternative to FEP and without the intentional addition of any per- or polyfluoroalkyl substances (PFAS). Independent third-party laboratory analysis on representative samples of PFX heat shrink has confirmed total fluorine levels of less than 20 ppm in heat shrink samples analyzed.