With PTFE under regulatory pressure as a PFAS substance, this episode shows how the intrinsic strength of Stanyl (PA46) provides low friction and wear without PTFE additives. It reviews data where PTFE-free Stanyl grades match or outperform PTFE-filled legacy plastics across tribology applications.
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.