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 & cup seal kit is specially engineered for INAN Makina MTB series hydraulic rock breakers: MTB210 / MTB250 / MTB275 / MTB285, widely equipped on medium & large excavators for quarrying, demolition and mining operations. The package contains complete accumulator diaphragm, rubber cup seals, O-rings, gaskets and back-up rings for full breaker overhaul.
Produced with imported high-strength HNBR and reinforced FKM fluororubber, the diaphragm set features outstanding hydraulic oil resistance, anti-fatigue, high pressure and wide temperature adaptability. It perfectly matches original MTB breaker OEM parts, solves common failures including accumulator air leakage, weak impact force, unstable hammer output and diaphragm rupture, greatly extending breaker service life under long-term heavy-load crushing work.
Item |
Detailed Parameter |
Product Name |
MTB210/MTB250/MTB275/MTB285 Hydraulic Breaker Diaphragm Cup Seal Kit |
Applicable Models |
MTB210, MTB250, MTB275, MTB285 Hydraulic Rock Breaker |
Compatible Series |
INAN Makina MTB Medium-Large Hydraulic Breaker Series |
Main Material |
Imported High Toughness HNBR / FKM Fluororubber + Reinforced Fiber Backing Layer |
Max Working Pressure |
130MPa |
Working Temperature |
-35°C ~ 125°C |
Kit Contents |
Accumulator Diaphragm (Cup Membrane), O-rings, housing gaskets, piston seals, backup rings, full overhaul sealing parts |
Cross Reference OEM No. |
42B0133C11, 45B0134A11, MTB210-KIT, MTB250-KIT, MTB275-KIT, MTB285-KIT |
Net Weight |
Approximately 1.2kg |
Applicable System |
Breaker nitrogen accumulator & hydraulic impact system |
Warranty |
12 Months |
Fully dimensional compatible with original INAN MTB210/250/275/285 breakers, matches all official OEM part numbers. No trimming or modification required for direct field installation, perfectly fits accumulator inner cavity structure.
Core diaphragm adopts high-performance HNBR with fiber reinforcement layer, supplemented by FKM auxiliary seals. Excellent anti-aging, anti-oil swelling and anti-repeated stretching performance, stably withstand frequent reciprocating deformation under -35°C ~ 125°C harsh working environment.
All components pass strict 130MPa high-pressure fatigue testing. Effectively eliminates nitrogen leakage inside accumulator, maintains stable strike energy, avoids weak breaking force, frequent nitrogen refilling and low working efficiency caused by damaged original diaphragm.
Covers all sealing and diaphragm accessories required for full accumulator & breaker maintenance. Integrated complete spare parts reduce secondary procurement and greatly shorten on-site repair downtime, lowering equipment overall operation cost.
Every diaphragm seal kit undergoes air tightness, high-pressure impact and long-cycle aging tests before delivery, meets original OEM manufacturing standards, guarantees stable and reliable long-term operation under mining & construction heavy-duty conditions.
Suitable for INAN Makina MTB210/MTB250/MTB275/MTB285 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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