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 diaphragm and piston cup repair kit is specially engineered for JSC JSB165 hydraulic rock breakers, widely matched on medium and large excavator demolition machinery. It contains integrated accumulator diaphragm, nitrogen chamber piston cup, auxiliary O-rings and buffer gaskets for full breaker energy storage system overhaul.
Manufactured with imported reinforced FKM fluororubber + high-toughness modified NBR composite material, the kit features outstanding anti-fatigue, oil resistance, high pressure and low temperature resistance. It perfectly replaces original JSC sealing spare parts, solves common faults including nitrogen leakage, impact force attenuation, abnormal hammer vibration and frequent pressure drop, and greatly extend the service life of JSB165 breaker under long-term mining, demolition and heavy impact working conditions.
Item |
Detailed Parameter |
Product Name |
JSB165 Hydraulic Breaker Diaphragm & Piston Cup Kit |
Applicable Model |
JSC JSB165 Medium Hydraulic Rock Breaker |
Compatible Series |
JSC JSB Series Hydraulic Hammer |
Main Material |
Imported Reinforced FKM Fluororubber + Modified High Toughness NBR |
Max Bearing Nitrogen Pressure |
18.0MPa |
Working Temperature |
-30°C ~ 120°C |
Kit Contents |
Accumulator diaphragm, nitrogen chamber piston cup, matched O-rings, buffer gaskets, full overhaul sealing accessories |
Cross Reference OEM No. |
JSC-JSB165, 3206897121 |
Net Weight |
Approximately 1.1kg |
Applicable System |
Hydraulic breaker accumulator nitrogen energy storage system |
Warranty |
12 Months |
Fully dimensionally consistent with original JSC JSB165 breaker spare parts, matches OEM part numbers JSC-JSB165 and 3206897121 perfectly. No cutting, grinding or modification required for direct on-site installation.
Core diaphragm and piston cup adopt high-performance FKM+modified NBR vulcanized composite material, with ultra-high tensile fatigue resistance. Excellent hydraulic oil corrosion resistance, anti-aging performance, stable elastic recovery within -30°C ~ 120°C wide temperature range.
All components pass 18.0MPa high-pressure nitrogen fatigue cycle test. Effectively isolate hydraulic oil and high-pressure nitrogen, eliminate slow nitrogen leakage, maintain stable impact frequency and striking power, avoid breaker weak hitting and idling.
Integrates all matching sealing accessories needed for accumulator maintenance. One set covers full repair requirements, reduce spare parts procurement cost and shorten equipment downtime for maintenance.
Every kit undergoes air tightness, high-pressure fatigue, high-temperature aging and tensile tests before delivery, fully meets OEM production standards, ensures stable long-term operation under harsh mining and construction working conditions.
Suitable for JSC JSB165 hydraulic breakers mounted on multiple heavy-duty construction 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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