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Case Studies

With more than 20 years of industry experience, Simker is dedicated to providing rubber diaphragms and accumulator solutions for the global energy, mining, construction machinery, and petrochemical industries. Guided by customer demand, Simker continuously advances technological innovation and material optimization to address complex operating conditions involving high temperature, pressure, and corrosion. These efforts improve equipment stability, extend service life, and reduce maintenance costs.

Simker has established long-term cooperation with well-known enterprises such as Atlas Copco, SANY Heavy Industry, China Shipbuilding Industry Corporation, and CRRC, providing customized special rubber components. The company’s market network covers both domestic and international markets, with exports to more than ten countries including Russia, Italy, Spain, India, and Saudi Arabia, and stable partnerships in Germany, Singapore, the Netherlands, the United States, and Australia.
Case Studies
Case Studies
Graphene Diaphragm Resistant to High-Temperature – Fivefold Service Life Improvement at 700°C
  • Customer Requirement
    The customer’s equipment operated at an ambient temperature of 700°C, resulting in a significantly reduced service life of rubber diaphragms and high maintenance costs. The customer required a solution to improve heat resistance and extend product longevity.
  • Simker’s Solution
    By integrating graphene with high-temperature-resistant composite rubber materials, Simker effectively resolved the thermal degradation issue and designed an optimized accumulator assembly for the customer.
  • Result
    Service life increased to five times that of the original product, meeting performance requirements under 700°C operating conditions.
Case Studies
  • Case Studies
  • Case Studies
Fatigue Life Enhancement from 300 Hours to 800 Hours
  • Customer Requirement
    A listed Chinese enterprise engaged in the research and manufacturing of large-scale rock drilling machines relied on imported accumulator components with long delivery cycles (3–6 months) and high costs, limiting timely technical upgrades. Existing diaphragms suffered from short fatigue life and low tear resistance.
  • Simker’s Solution
    A one-stop accumulator assembly solution was provided, including:
    1) Optimized accumulator structure for precise diaphragm compatibility;
    2) Diaphragm design and material selection to enhance fatigue resistance and tear strength.
  • Result
    Service life of the accumulator assembly significantly improved, reducing replacement frequency and maintenance costs. The diaphragm fatigue life increased from 300 operating hours to 800 operating hours.
Case Studies
Case Studies
Rubber Diaphragm Resistant to Low Temperature for Extreme Cold Environments
  • Customer Requirement
    The customer required rubber diaphragms capable of operating in extremely cold regions. Existing products failed to maintain elasticity and sealing performance under low temperatures, resulting in product failure.
  • Simker’s Solution
    By applying low-temperature-resistant modified materials and nano-composite technologies, Simker resolved the brittleness issue and ensured the diaphragm’s fatigue life and performance stability.
  • Result
    Through low-temperature testing and field verification, the diaphragms met all customer requirements for cold-resistance performance.
Case Studies
  • Case Studies
  • Case Studies
Enhanced Medium Resistance and Airtightness in Automotive Accumulator Diaphragms
  • Customer Requirement
    A Chinese automobile manufacturer reported that conventional rubber diaphragms used in automotive accumulators rapidly expanded and lost sealing capability when exposed to specific fluids, leading to excessive gas permeability and shortened service life.
  • Simker’s Solution
    Using special rubber composite modification technology, Simker improved molecular crosslinking density, effectively enhancing medium resistance and gas impermeability.
  • Customer Feedback
    The solution received high recognition from the customer, fully addressing existing technical issues.
Case Studies
  • Case Studies
  • Case Studies
High-Airtightness Rubber Diaphragm to Prevent Nitrogen Leakage in Marine Hydraulic Accumulators
  • Customer Requirement
    A Chinese shipbuilding and maintenance company reported excessive nitrogen leakage in rubber diaphragms used in high-pressure hydraulic accumulators, failing to meet endurance requirements for marine operations.
  • Simker’s Solution
    1) Developed a gas-tight composite rubber formulation;
    2) Optimized diaphragm sealing structure and component design to enhance physical properties.
  • Result
    Experimental validation confirmed that the new design met all customer pilot-scale testing requirements.
  • Case Studies
  • Case Studies
Case Studies
Enhanced Accumulator Assembly to Extend Service Life in Drilling Machinery
  • Customer Requirement
    A drilling equipment manufacturer experienced frequent shutdowns due to accumulator assemblies with a service life of only 7–15 days, causing system instability and damage to hydraulic components.
  • Simker’s Solution
    1) Provided a redesigned accumulator assembly addressing diaphragm pressure endurance, sealing, and fatigue life;
    2) Introduced reliable accumulator assembly, resolving frequent failure issues and preventing collateral damage to other hydraulic components.
  • Result
    Accumulator service life increased from 15 days to 2 years, significantly improving economic efficiency and reducing maintenance costs.
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