Case studies EGC Seal Design Pressure energized Optipak® stem seal set. MH/11.16 www.EGCcomponents.com Testing Details and Results Hydrostatic Pressure Test, Primary Stem Seal • Media: Water • Temperature: 24°C (75°F) • Test Details: Pressurize the test fixture to 15,000 psig and dwell for 1 hour. • Results: PASSED. No change in pressure observed. ISO15848 Class BH (>C01 endurance class) • Media: Helium • Temperature: 121°C (25

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