33-99No. Mufu E Rd. Gulou District, Nanjing, China [email protected] | [email protected]
33-99No. Mufu E Rd. Gulou District, Nanjing, China [email protected] | [email protected]
Product Overview
This heavy‑duty cup seal and diaphragm assembly is specially engineered for Epiroc 2238HD and 2238HD+ hydraulic rock drills. It serves as the core sealing component for accumulator and return‑oil buffer systems, resisting frequent pressure fluctuation under harsh underground mining conditions.
Manufactured from high‑strength fabric‑reinforced FKM composite rubber material, this component delivers outstanding fatigue resistance, pressure‑cycle endurance, oil‑proof and anti‑aging performance. It can perfectly replace original factory sealing parts, solve typical faults including accumulator pressure dropping, insufficient impact power and internal hydraulic leakage, and extend the overhaul cycle of rock drill under continuous high‑intensity drilling operation。
Product Specifications
Item |
Detailed Parameter |
Product Name |
Epiroc 2238HD / 2238HD+ Rock Drill Cup Seal & Diaphragm |
Applicable Model |
2238HD, 2238HD+ Hydraulic Rock Drill |
Compatible Series |
Epiroc underground hydraulic rock drill series |
Main Material |
Fabric‑reinforced imported FKM composite rubber |
Max Working Pressure |
28MPa |
Working Temperature |
-25°C ~ 110°C |
Kit Contents |
Cup seal, rubber diaphragm, matching auxiliary sealing rings |
Cross Reference OEM No. |
3115233300, 3115519000 |
Net Weight |
Approximately 0.45kg |
Applicable System |
Rock drill accumulator & return‑oil buffer hydraulic system |
Warranty |
12 Months |
Key Selling Points
1. 100% Exact OEM Replacement
Fully dimensionally compatible with Epiroc 2238HD / 2238HD+ hydraulic rock drills. Matches OEM part numbers 3115233300 and 3115519000. Direct installation without any modification.
2. High‑Performance Fabric‑Reinforced Composite Material
Adopts fabric‑reinforced imported FKM rubber base material. Excellent pressure‑cycle fatigue resistance, hydraulic‑oil corrosion resistance and aging‑resistant property, stable operation within temperature range ‑25°C ~ 110°C, suitable for long‑term underground severe working environment。
3. Anti‑Fatigue & Stable Pressure Holding Performance
Each piece undergoes strict pulsating pressure cycle testing under 28 MPa working pressure. Effectively prevents accumulator pressure loss, maintains steady impact energy of rock drill, avoids drilling power decay caused by diaphragm early rupture.
4. Integrated Matching Assembly
Complete set includes main cup‑seal diaphragm and supporting auxiliary sealing rings. One‑stop replacement reduces on‑site assembly preparation work, shortens equipment downtime and cuts overall maintenance cost of drilling rig.
5. Strict Factory Quality Control
Every cup seal & diaphragm goes through air‑tightness, pulsating pressure and accelerated aging inspection before delivery. Reaches original equipment performance standard and guarantees reliable continuous service for mining machinery.
6. Application Scope
Designed for Epiroc 2238HD / 2238HD+ rock drills fitted on various heavy‑duty drilling equipment:
• Underground mining drill jumbos
• Tunnel excavation drilling rigs
• Medium‑deep hole mining drilling vehicles
• Underground rock bolter equipment
• Hydraulic rock drill auxiliary hydraulic buffer systems
• Heavy‑duty mobile drilling machinery
Welcome to HOVOO, a Chinese seal factory. Production of PU, Rubber and PTFE seals. The seals include O-ring, piston seal, rod seal, Gray ring and gas seal.
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