High-Performance Seal Kit for Hydraulic Rock Drills This seal kit is engineered to provide comprehensive sealing solutions for R38 hydraulic rock drills, preventing fluid leakage in high-pressure systems exposed to mining debris, moisture, and extreme temperature fluctuations. The kit combines FKM (Viton) and NBR rubber components to optimize performance across critical hydraulic circuits, ensuring reliability in both aggressive and standard operating environments.
Key Technical Attributes
Material Performance:
FKM seals excel in high-temperature zones (-20°C to +200°C) and resist hydraulic fluids (ISO 6743-4), diesel, and mineral oils—ideal for impact mechanisms and high-friction components. NBR components offer cost-effective sealing in lower-temperature circuits, providing flexibility for static applications .
Both materials meet ASTM D1418 standards, with 70±5 Shore A hardness to balance sealing force and durability.
Precision & Compatibility:
18-piece set includes O-rings (5mm to 22mm cross-sections), U-cup lip seals, and anti-extrusion backup rings, all machined to ±0.05mm tolerance (ISO 3601-1). This precision ensures a tight fit in ISO 3601-3 grooves, reducing installation time by 40% compared to sourcing individual seals .
Designed as a direct replacement for R38 hydraulic rock drill OEM seals, it fits impact pistons, hydraulic cylinders, and valve bodies without modifications.
Durability & Reliability:
FKM components maintain ≤20% compression set after 70 hours at 200°C (ASTM D395), ensuring long-term sealing integrity. NBR elements resist abrasion, extending service life to 4500 hours under standard drilling conditions .
The kit’s comprehensive design minimizes unplanned downtime from leaks, protecting critical components like hydraulic pumps, hoses, and actuators from fluid loss and contamination.
Applications
Primary Use: R38 hydraulic rock drills in tunneling, quarrying, and mineral exploration.
Suitable For: Sealing hydraulic circuits in impact mechanisms, feed cylinders, and rotary drive systems.
