Spring-energized PTFE seals replace traditional elastomers in cryogenic and LNG wellheads operating below -75°F. Inconel C-spring energizers maintain sealing force when elastomers become brittle, ensuring leak-tight performance during cooldown cycles and preventing fugitive emissions in Arctic and floating LNG projects https://globalsealstech.com/product-category/oil-gas-seals/api-6a-wellhead-equipment-seals/