API 6A wellhead equipment seals are critical non-metallic and metallic components that ensure pressure integrity in Christmas trees, tubing heads, casing heads, and valves for oil, gas, and geothermal wells. These seals, governed by API Specification 6A (21st Edition), withstand pressures up to 20,000 psi, temperatures from -75°F to 650°F, and sour (H2S) environments per NACE MR0175. ... https://globalsealstech.com/product-category/oil-gas-seals/api-6a-wellhead-equipment-seals/