100/400 White Smooth Straight PP Cap / Unlined

Product teams may consider it for cosmetics, personal care, wellness, supplements, household, and specialty products. For Part 138210, the central question is how the packaging closure behaves in the assembled package. Nominal finish compatibility is only the first screen; thread profile, land geometry, torque, and liner compression decide sealing. Confirm thread fit, torque, liner performance, leakage resistance, and opening behavior on production containers. That discipline protects both package performance and the consumer experience.