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 seal kit is specially developed for JAB RB15 & RB18 hydraulic rock breakers, widely matched with 3–8 ton mini excavators for demolition, rock crushing and municipal construction. The complete set includes accumulator rubber diaphragm, piston cup (leather bowl), O-rings, gaskets and backup rings for full breaker overhaul maintenance.
Adopted imported high-performance NBR and reinforced PU composite material, the kit delivers outstanding oil resistance, high elasticity, anti-tear and wear-resistant performance. It fully replaces original JAB OEM sealing parts, effectively solving common faults such as accumulator gas leakage, weak impact force, hydraulic oil seepage and pressure attenuation, greatly extending the service life of RB15/RB18 breakers under long-term high-frequency impact working conditions.
Item |
Detailed Parameter |
Product Name |
JAB RB15 RB18 Hydraulic Breaker Diaphragm & Cup Seal Kit |
Applicable Model |
JAB RB15, JAB RB18 Small Hydraulic Rock Breaker |
Compatible Series |
JAB RB Series Mini Breaker |
Main Material |
Imported High-Elastic NBR Rubber + Reinforced PU Piston Cup |
Max Working Pressure |
26MPa |
Working Temperature |
-30°C ~ 120°C |
Kit Contents |
Accumulator diaphragm, piston cup seal, O-rings, metal gaskets, PTFE backup rings, full overhaul sealing accessories |
Cross Reference OEM No. |
JAB-RB15, JAB-RB18, BR-15088, BR-18102 |
Net Weight |
Approximately 0.62kg |
Applicable System |
Breaker nitrogen accumulator & hydraulic impact system |
Warranty |
12 Months |
Fully dimensional matched with original JAB RB15/RB18 breakers, consistent with OEM part numbers JAB-RB15, JAB-RB18, BR-15088 and BR-18102. No cutting, grinding or modification required, direct plug-and-play installation.
Core diaphragm and piston cup adopt imported high-rebound NBR + reinforced PU composite formula. Superior oil corrosion resistance, low-temperature flexibility and anti-aging property, stable elastic performance from -30°C to 120°C, not easy to crack or deform under frequent impact fatigue.
All parts pass strict 26MPa high-pressure fatigue impact test. Effectively stop nitrogen leakage of accumulator and external hydraulic oil seepage, maintain stable internal pressure of the breaker, guarantee continuous and powerful impact output without power drop during long-hour operation.
Integrates all sealing consumables needed for full disassembly overhaul of RB15/RB18 breakers. One set covers diaphragm, piston cup and all auxiliary seals, greatly shorten repair downtime and reduce overall equipment maintenance cost.
Each batch of seal kits undergoes air tightness test, high-pressure impact aging test and dimensional precision inspection before delivery, fully meets OEM production standards, providing stable and reliable long-term performance for construction machinery.
Designed exclusively for JAB RB15 and RB18 hydraulic rock breakers mounted on multiple light-duty construction equipment: • 3–8 ton mini excavators (Sany SY35/55, Lonking 60, XCMG 60, Sunward 40/60) • Small backhoe loaders • Municipal demolition machinery • Stone quarry & road crushing equipment • Mobile hydraulic impact equipment • Small nitrogen accumulator hydraulic breaking systems
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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