Metal-energized hybrid API 6A gate valve seals Singapore combine metal-to-metal primary contact with secondary elastomeric elements for fire-safe, bidirectional performance in extreme HPHT conditions. Used in expanding gate designs, they resist corrosion and maintain sealability after thermal cycling. Singapore-based suppliers provide these advanced solutions with full API 6A monogram... https://globalsealstech.com/product-category/oil-gas-seals/api-6a-gate-valve-seals/