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 cup diaphragm is custom engineered for Etc. K50 hydraulic rock breakers, widely fitted on 6–8 ton mini excavators and demolition construction machinery. It is the core energy storage sealing part matched with full breaker overhaul seal kits, integrating piston cup, main diaphragm, O-rings, gaskets and backup rings for complete accumulator maintenance.
Manufactured with imported high-strength HNBR and reinforced PPDI composite rubber, the part boasts superior nitrogen resistance, hydraulic oil resistance, high cycle fatigue resistance and tear resistance. It perfectly replaces original Etc. K50 OEM diaphragm, solves typical faults including nitrogen leakage, weak striking force, frequent pressure drop and abnormal hammer jitter, greatly extending breaker service life under continuous high-frequency impact heavy-duty working conditions.
Item |
Detailed Parameter |
Product Name |
Etc. K50 Hydraulic Breaker Accumulator Cup Diaphragm Repair Kit |
Applicable Model |
Etc. K50 Hydraulic Rock Breaker |
Compatible Series |
Etc. K Series Medium Hydraulic Breakers |
Main Material |
Imported High-strength HNBR + Reinforced PPDI Composite Rubber + Polyurethane Backup Rings |
Max Working Pressure |
130MPa |
Working Temperature |
-30°C ~ 135°C |
Kit Contents |
Main accumulator cup diaphragm, shaft oil seals, O-rings, sealing gaskets, anti-extrusion backup rings, full overhaul sealing accessories |
Cross Reference OEM No. |
ETC-K50, 3089672100 |
Net Weight |
Approximately 0.68kg |
Applicable System |
Breaker nitrogen accumulator energy storage sealing system |
Warranty |
12 Months |
Fully dimensional matched with original Etc. K50 breaker accumulator diaphragm, consistent with OEM part numbers ETC-K50 and 3089672100. Zero modification required for direct installation during routine breaker maintenance.
Core cup diaphragm adopts imported HNBR+PPDI dual composite material with special vulcanization molding process. Outstanding nitrogen isolation, hydraulic oil corrosion resistance and anti-aging performance, stable elastic output under -30°C to 135°C wide temperature environment.
All finished parts pass strict 130MPa high-pressure nitrogen sealing and millions of high-frequency fatigue cycle tests. Effectively isolates nitrogen chamber and hydraulic oil circuit, eliminates internal nitrogen leakage and external oil seepage, maintains stable striking power and consistent breaking efficiency.
Covers all sealing spare parts required for full disassembly and overhaul of Etc. K50 breaker accumulator. Integrated complete set reduces separate part purchasing time, shortens equipment maintenance downtime and lowers overall operation cost.
Every diaphragm repair kit undergoes air tightness, high pressure resistance, fatigue aging and dimensional precision tests before delivery. Fully meets OEM production standards to guarantee long-term stable performance under harsh construction site working conditions.
Specially matched for Etc. K50 hydraulic breakers mounted on multiple heavy-duty engineering equipment:
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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