24/400 Black Smooth Straight PP Cap / Unlined

Part 138430 should be judged on technical fit, line performance, and the finished user experience. Use filled-package trials to qualify fit, liner compression, leakage, and repeated opening performance. Even on the same neck finish, liner thickness and thread engagement can materially change seal performance. It may fit briefs involving cosmetics, personal care, wellness, supplements, household, and specialty products. That discipline protects both package performance and the consumer experience.