青色のテフロンテープと白色のテフロンテープ:色が実際に何を物語っているのか
A $2,000 maintenance call triggered by a $0.30 roll of tape. That’s not a hypothetical — that’s a real job I watched unfold with a distributor client in Southeast Asia. An installer grabbed white PTFE tape out of habit for a 1-inch industrial cooling water line. The fitting looked fine on day one. By week four it was weeping. By week six it had failed completely. The root cause? Wrong density for the thread size and operating pressure. Nobody told the installer that color is a density code. That single misunderstanding costs facilities engineers, OEM assembly lines, and distributor reputations more than most people want to admit. Once you understand … 続きを読む