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 (seal cup) is specially developed for Etc. K25 hydraulic rock breakers, widely matched on mini excavator mounted hydraulic hammers for construction and mining operations. It is the core energy storage sealing part of the breaker accumulator, effectively isolating nitrogen gas and hydraulic oil.
Adopted imported high-performance PPDI composite rubber with reinforced fiber layer, the product features outstanding tear resistance, fatigue resistance, high temperature & hydraulic oil resistance. It perfectly replaces original Etc. K25 OEM diaphragm, solves common failures such as diaphragm rupture, gas leakage, hammer power attenuation and abnormal impact, greatly extending the whole service life of hydraulic breaker under long-time high-frequency impact working conditions.
Item |
Detailed Parameter |
Product Name |
Etc. K25 Hydraulic Breaker Accumulator Diaphragm (Seal Cup) |
Applicable Model |
Etc. K25 Hydraulic Rock Breaker |
Compatible Series |
Etc. K Series Small Hydraulic Hammer |
Main Material |
Imported PPDI Composite Rubber + Reinforced Fiber Layer |
Max Working Pressure |
22MPa |
Working Temperature |
-30°C ~ 150°C |
Product Structure |
Integral dome-shaped diaphragm with thickened edge anti-tear structure |
Cross Reference OEM No. |
ETC-K25, DIA-K25-001 |
Net Weight |
Approximately 0.32kg |
Applicable System |
Hydraulic breaker nitrogen accumulator energy storage system |
Warranty |
12 Months |
Fully dimensional consistent with original Etc. K25 breaker diaphragm, matches OEM part numbers ETC-K25 and DIA-K25-001. No trimming, no modification, direct plug-and-play installation.
Core diaphragm body adopts high-strength PPDI composite rubber with internal fiber reinforcement layer. Superior oil resistance, anti-fatigue and anti-aging performance, stable elastic performance under -30°C ~ 150°C alternating temperature environment. Not easy to harden, crack or lose elasticity after long-term hydraulic oil soaking.
Thickened edge anti-tear design, strictly tested under 22MPa cyclic high-frequency impact pressure. Effectively isolate nitrogen and hydraulic oil, prevent air leakage and oil mixing inside accumulator, keep stable impact force and consistent hammer output power. Greatly reduce failure rate of diaphragm burst.
Optimized dome elastic structure, fast rebound response for frequent energy storage and release cycles. Adapt to continuous high-frequency striking of rock breaking, demolition and mining works, far longer service life than ordinary NBR diaphragms.
Every K25 diaphragm passes air tightness, cyclic pressure fatigue and high temperature aging tests before delivery, fully meets OEM production standards, ensures stable and reliable heavy-duty industrial performance.
Suitable for Etc. K25 hydraulic rock breakers equipped on multiple engineering 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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