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 kit is specially developed for SOOSAN SB120, SB121, SB130, SB140, SBU+85, SBU+105 hydraulic rock breakers, widely matched on medium and large excavators for demolition, mining and road construction projects. The full set contains accumulator rubber diaphragm (leather cup), O-rings, back-up rings, flat gaskets and all supporting sealing parts for complete breaker overhaul.
Core diaphragm adopts imported high-performance HNBR hydrogenated nitrile rubber with reinforced edge structure, featuring outstanding hydraulic oil resistance, impact fatigue resistance, wide temperature adaptability and anti-extrusion performance. It fully replaces original SOOSAN factory sealing parts, effectively solves common failures such as nitrogen gas leakage, hydraulic oil cross-leakage, unstable striking force and accumulator pressure loss, greatly extending breaker service life under long-term high-frequency impact working conditions.
Item |
Detailed Parameter |
Product Name |
SOOSAN Hydraulic Breaker Diaphragm Seal Kit |
Applicable Models |
SB120, SB121, SB130, SB140, SBU+85, SBU+105 SOOSAN Hydraulic Hammer |
Compatible Series |
SOOSAN SB & SBU+ Medium-large Hydraulic Breaker Series |
Main Material |
Imported High-strength HNBR Rubber + PTFE Reinforced Backup Ring |
Max Working Pressure |
125MPa |
Working Temperature |
-35°C ~ 135°C |
Kit Contents |
Accumulator Diaphragm Leather Cup, O-rings, Sealing Gaskets, Anti-extrusion Backup Rings, Full overhaul matching seals |
Cross Reference OEM No. |
C61139, SOOSAN-SB120/121/130/140, SOOSAN-SBU+85/SBU+105 |
Net Weight |
Approximately 1.2kg |
Applicable System |
Hydraulic Breaker Nitrogen Accumulator Sealing System |
Warranty |
12 Months |
Fully dimensionally consistent with original SOOSAN breaker accessories, matches OEM part numbers C61139, SOOSAN-SB/SBU+ series codes. No cutting, grinding or modification required for direct on-site installation, perfect fit for accumulator cavity to avoid gas leakage caused by dimensional deviation.
Core leather cup diaphragm uses premium HNBR rubber compound, with reinforced thickened edge anti-tear design. Superior resistance to hydraulic oil aging, high temperature oxidation and frequent impact fatigue; stable elasticity maintained between -35°C to 135°C, service life 30% longer than ordinary NBR diaphragms.
All components pass strict 125MPa high-pressure air tightness and impact cycle fatigue testing. Effectively isolates nitrogen chamber and hydraulic oil circuit, eliminates internal cross leakage and external gas loss; keeps accumulator pressure stable, restores consistent striking power of the breaker without force attenuation during continuous operation.
Integrates all sealing consumables needed for full disassembly and maintenance of the above six SOOSAN breaker models. One set covers diaphragm leather cup and all auxiliary seals, reduces spare parts sorting time, shortens equipment downtime and lowers overall maintenance cost for construction fleets.
Each batch of diaphragm seal kits undergoes air tightness, high-pressure extrusion, high-low temperature aging and repeated impact fatigue tests before delivery, fully meets SOOSAN OEM production standards, stable and reliable for long-term heavy engineering operation.
Suitable for SOOSAN SB120/SB121/SB130/SB140/SBU+85/SBU+105 hydraulic breakers equipped on various 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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