In HC95 Hydraulic Rock Drill (or Hydraulic Drifter) systems, the Seals package 101051034 is a “comprehensive protective barrier” for the hydraulic circuit—it includes multiple types of precision seals (e.g., O-rings, lip seals, washer seals) that cover key connection points (cylinder ports, piston rods, valve joints) to keep hydraulic oil contained and external contaminants out. With over a decade in mining equipment maintenance, I’ve seen generic seal packages fail consistently: their low-quality rubber lacks oil resistance and durability, leading to leaks in 200-300 hours. These leaks waste costly hydraulic oil, corrode metal components, and even cause valve jamming—resulting in $3,500+ in repairs and 2-3 days of unplanned downtime, which cripples mining productivity.