Spring-energized lip seals with U-cup or hat designs offer low-friction dynamic sealing in rotating or reciprocating tools. PTFE or PEEK jackets with elastomer energizers maintain contact in low-pressure or gas environments. These seals minimize breakout torque and wear in mud motors or measurement-while-drilling tools. https://globalsealstech.com/product-category/oil-gas-seals/downhole-completion-tools-seals/