Surface finish requirements on sealing surfaces affect seal effectiveness and wear rates. Cylinder bores typically require 8-16 microinch Ra finish. Piston rod finishes range from 4-16 microinch Ra depending on seal type. Too smooth surfaces may not retain lubricating film, while rough surfaces accelerate seal wear. Hard chrome plating on rods enhances durability and corrosion resista... https://globalsealstech.com/hydraulic-seals/