P-seals and T-seals for actuator bonnets reduce stem operating torque by up to 40%. Combining elastomeric energizers with thermoplastic caps, they maintain 20,000 psi stem sealing while minimizing wear on rising and non-rising stems in manual and hydraulic actuated gate valves. https://globalsealstech.com/product-category/oil-gas-seals/api-6a-gate-valve-seals/