: A central, pulsating geometric iris etched in silver leaf. This represents the "Watermark"—the point where pressure meets precision. The Flow Lines
"All WaterMark is the same." Fact: Level 1 (General) products do not undergo annual factory audits. Spec 017 LIC requires lifelong surveillance. Buying a "cheap" LIC product usually means skipping this step. watermark spec 017 lic
Submit samples to a NATA-accredited lab. For LIC products, expect destructive testing (e.g., hydrostatic pressure to burst point, thermal cycling). : A central, pulsating geometric iris etched in silver leaf