E4 Black Phenolic Straight Cap F217

When the brief calls for a well-defined compression-molded closure, Part 134670, the E4 Black Phenolic Straight Cap F217, provides a practical specification to evaluate. Qualification should cover thread engagement, liner compatibility, line application, and expected storage conditions. Phenolic rigidity supports a precise feel, but liner selection and torque remain central to reliable sealing. It may fit briefs involving prestige beauty, wellness, pharmaceutical, supplement, and specialty-product packaging.