Helical Spring Energized Seals — Reliable Sealing for Cryogenic, Vacuum & High-Pressure Environments Helical spring energized seals deliver a high unit load with minimal deflection, making them a trusted energizer choice for static or slow-moving sealing systems used in vacuum, cryogenic and many high-pressure applications. At Handa Springs, our helical energizers are precision-manufactured to provide consistent sealing force, long fatigue life and minimal leakage — even under thermal cycling and pressure variation. How Helical Spring Energized Seals Work A helical energizer is a ribbon-wrap spring formed into a tight helix. It fits beneath a softer jacket or sealing lip (PTFE,......