This heavy-duty accumulator diaphragm & seal cup repair kit is custom engineered for TOYO THBB200, HRB2000 and TOYO2000 hydraulic rock breakers, widely matched to medium & large excavator hammer attachments for mining, demolition and road construction. The package contains complete accumulator diaphragm, nitrogen seal cup, auxiliary O-rings and gaskets for full breaker back head overhaul.
Constructed with imported high-strength HNBR and reinforced FKM fluororubber with fabric reinforcement, the kit delivers outstanding nitrogen sealing, oil resistance, high temperature fatigue resistance and anti-abrasion performance. It perfectly replaces original TOYO OEM rubber parts, solves typical faults including nitrogen leakage, striking power attenuation, unstable impact force and frequent diaphragm rupture, and greatly extends breaker service life under continuous heavy-load crushing operations.
Item |
Detailed Parameter |
Product Name |
TOYO THBB200 HRB2000 TOYO2000 Breaker Diaphragm & Seal Cup Kit |
Applicable Model |
THBB200 / HRB2000 / TOYO2000 Hydraulic Rock Breaker |
Compatible Series |
TOYO Medium-Large Hydraulic Hammer Series |
Main Material |
Imported Reinforced HNBR + FKM Fluororubber Fabric Diaphragm |
Max Working Nitrogen Pressure |
26.0MPa |
Working Temperature |
-30°C ~ 120°C |
Kit Contents |
Accumulator diaphragm, nitrogen seal cup, O-rings, back head gaskets, full overhaul rubber spare parts |
Cross Reference OEM No. |
TOYO-THBB200, TOYO-HRB2000, TOYO2000-DIA01 |
Net Weight |
Approximately 0.42kg |
Applicable System |
Breaker accumulator nitrogen energy storage system |
Warranty |
12 Months |
Fully dimensionally matched to original TOYO THBB200, HRB2000 and TOYO2000 hydraulic breakers, consistent with OEM part numbers TOYO-THBB200, TOYO-HRB2000, TOYO2000-DIA01. Direct installation without cutting, grinding or modification.
Core diaphragm and seal cup adopt fabric-reinforced HNBR & FKM composite rubber, featuring ultra-high rebound, anti-fatigue, oil corrosion and high temperature aging resistance. Stable sealing performance maintained within -30°C ~ 120°C harsh construction environments.
All rubber components pass 26.0MPa long-cycle nitrogen pressure fatigue testing. Effectively eliminate back-head nitrogen leakage, prevent continuous loss of striking energy, and maintain stable impact frequency and consistent breaking force during long-hour operation.
Integrates all rubber sealing consumables required for accumulator disassembly and overhaul. One set covers full repair demands, cuts spare parts matching time and reduces equipment downtime and overall operation maintenance cost.
Every diaphragm & seal cup kit undergoes air tightness high-pressure test, thermal aging test and repeated impact fatigue test before delivery, fully meets TOYO OEM production standards, guarantees stable long-term reliability for heavy construction scenarios.
Fit TOYO THBB200 / HRB2000 / TOYO2000 hydraulic breakers mounted on various heavy-duty construction equipment: