PTFE is widely used as a friction-reducing additive in plastics such as POM, PEEK and standard polyamides, but as a PFAS ("forever chemical") it faces increasing restriction from bodies including ECHA, the US EPA and Japan's Ministry of Health, Labour and Welfare. Simply removing it causes friction, heat and wear to rise. The white paper's approach is to use intrinsic material properties instead of additives: Stanyl (PA46) has a dense, highly crystalline structure that provides low friction and high-temperature wear resistance on its own, and Envalior is validating PTFE-free Stanyl grades together with PFAS-free greases for complete clean systems. Reported test data show PTFE-free grades performing competitively — for example Stanyl HGR3W for low-friction timing-chain guides, and Stanyl TW376 matching or exceeding PTFE-filled POM, PA66 and PPA in dry gear tests at 80 C — alongside a graded portfolio (TW341/TW441, fiber-reinforced F- and B-series, and TW213F2/TW200F3 for EPS and brake-booster gears). The takeaway for engineers is compliance without a performance penalty: lower regulatory and warranty risk, comparable or better durability, and a cleaner environmental profile.

About this podcast — Made for engineers and product development teams, these easy-listening episodes explore practical engineering challenges and the material choices behind them — giving you insight you can put to work in your own designs.

At Envalior, we help you reduce time, cost, risk and CO₂. The goal is simple: to help you select and process the right material more easily, and to deliver solutions with proven impact in the real world.

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