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]
This heavy-duty accumulator diaphragm & piston cup repair kit is specially customized for EVERDIGM (Hanwoo) RHB320, EHB20, EH23, EHB26 hydraulic rock breakers, widely fitted on mini & medium excavators for demolition, mining and road construction works. The complete set contains dedicated energy storage diaphragm, piston sealing cups, matched O-rings, gaskets and anti-extrusion backup rings for full accumulator overhaul maintenance.
Produced with imported high-performance HNBR & reinforced PU composite material, the kit boasts outstanding oil resistance, high pressure fatigue resistance, wide temperature adaptability and ultra-long elastic service life. It fully matches original EVERDIGM spare parts, effectively solving common failures including nitrogen leakage, hydraulic oil cross-contamination, weak impact force and rapid pressure drop, stabilizing breaker output under continuous high-frequency heavy impact operation and greatly extending breaker service life.
Item |
Detailed Parameter |
Product Name |
EVERDIGM RHB320 EHB20 EH23 EHB26 Breaker Diaphragm & Piston Cup Seal Kit |
Applicable Models |
RHB320, EHB20, EH23, EHB26 EVERDIGM Hydraulic Rock Breaker |
Compatible Series |
EVERDIGM EHB Light Series / RHB Large Impact Series Hydraulic Hammers |
Main Material |
Imported HNBR + Reinforced PU Piston Cup + Hardened Backup Ring |
Max Working Pressure |
130MPa |
Working Temperature |
-35°C ~ 135°C |
Kit Contents |
Accumulator diaphragm, piston sealing cups, matching O-rings, gaskets, anti-extrusion backup rings, full overhaul repair parts |
Cross Reference OEM No. |
EV-RHB320-DIA, EV-EHB20-23-26-CUP, 210800320 |
Net Weight |
Approximately 1.1kg |
Applicable System |
Breaker nitrogen accumulator oil-gas isolation sealing system |
Warranty |
12 Months |
Fully dimensionally compatible with original EVERDIGM RHB320, EHB20, EH23, EHB26 hydraulic breakers, consistent with OEM part numbers EV-RHB320-DIA, EV-EHB20-23-26-CUP and 210800320. No cutting, grinding or modification required for direct on-site installation.
Core diaphragm and piston cup adopt high-toughness HNBR + reinforced PU composite vulcanization process, featuring anti-aging, hydraulic oil corrosion resistance and superior dynamic elasticity. Stable performance sustained in -35°C to 135°C harsh construction environment, resistant to cracking and deformation under long-term high-frequency impact.
All spare parts pass strict 130MPa high pressure fatigue impact testing, thoroughly isolate nitrogen and hydraulic oil inside accumulator. Eliminate gas leakage, oil mixing and pressure attenuation issues, keep stable impact frequency and powerful crushing force of the breaker all day long.
All matched sealing consumables required for full accumulator repair are included in one set, no separate purchasing of scattered parts. Greatly shorten machine downtime and reduce overall equipment maintenance & operation cost.
Every diaphragm & piston cup kit undergoes air tightness, high pressure impact and thermal aging aging tests before delivery, fully meets EVERDIGM OEM production standards, delivering stable and reliable long-term construction performance.
Suitable for all construction equipment equipped with EVERDIGM RHB320, EHB20, EH23, EHB26 hydraulic rock breakers:
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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