Wireline grease seals form a viscous barrier in control heads, sealing around cables under pressure. Injection systems maintain grease volume during runs. PTFE-based greases resist chemical degradation. Seal cartridges enable quick field replacement. Temperature ratings to 350°F suit HPHT wells. Anti-extrusion rings support elastomers in high-differential scenarios. Stacks combine mul... https://globalsealstech.com/product-category/oil-gas-seals/oil-free-lubricated-pump-seals/