Electric line collector ring seals use spring-energized PTFE lips to maintain electrical isolation while sealing around moving e-line. Rated to 25,000 psi and 350°F, they prevent shorting and fluid ingress in harsh downhole environments during cased-hole logging and perforating operations https://globalsealstech.com/product-category/oil-gas-seals/oil-free-lubricated-pump-seals/