Seal types used in API 6A equipment include metal ring gaskets, elastomeric O-rings, energized seals, and specialty gaskets. Metal ring gaskets create metal-to-metal seals in flanged connections under high pressure. Elastomeric O-rings seal valve stems, bonnets, and threaded connections. Pressure-energized seals use system pressure to increase sealing force. Each seal type addresses s... https://globalsealstech.com/product-category/oil-gas-seals/api-6a-wellhead-equipment-seals/