Introduce

Rubber brake diaphragm seal is a sealing element specially used for circuit breakers. Its primary function is to regulate and control circuit breakers’ braking system. made of rubber material and specifically designed and functional to guarantee the circuit breaker’s safe operation. An electrical component called a circuit breaker is frequently seen in power systems and is used to open and close circuits. The seal is essential to the circuit breaker braking system since its purpose is to supply braking force when the circuit breaker switches, guaranteeing that the circuit breaker can swiftly stop moving and stay in the needed position.

Technical data

Material HNBR
Density 1.17 – 1.39 g/cm³
Hardness (hardness range) 60 – 90 Shore A
Thermal conductivity 0.2 – 0.3 W/m·K
Environmental stress cracking resistance (F50 value) 70 – 150°C
Low temperature elasticity (TR10) -30 to -45°C

Certification standard

  • The International Organization for Standardization (ISO) created the ISO 9001 quality management system certification standard, which is applicable to a number of industrial and service sectors. A manufacturer’s compliance with quality management standards, such as those related to product design, production, quality control, and continuous improvement, can be confirmed by an ISO 9001 certification.
  • Based on ISO 9001 and enhanced with industry-specific standards, ISO/TS 16949 is the quality management system certification standard for the automotive sector. The ISO/TS 16949 certification standard holds potential significance for rubber brake diaphragm seals used in circuit breakers provided to automakers.
  • UL certification: Underwriters Laboratories, a US-based independent safety science organization, offers certification services for products’ safety. It could be required to obtain UL certification for some rubber brake diaphragm seals for circuit breakers that are shipped to the US market.
  • Certification services for product safety are offered by the Canadian Standards Association (CSA), a certification body in Canada. Rubber braking diaphragm seals for circuit breakers supplied to the Canadian market could require CSA certification.
Advantage and function
  1. Sealing performance: The rubber brake diaphragm seal ensures that equipment is properly sealed to stop the leaking of liquid or gas. The ability of circuit breakers to function correctly is directly correlated with the seals’ efficacy.
  2. Chemical resistance: The rubber brake diaphragm seal is highly resistant to chemicals and liquid media, including coolant, hydraulic oil, lubricating oil, and others. It can also tolerate degradation from these substances.
  3. Heat resistance: It can withstand high temperatures and yet retain its suppleness and sealing capabilities. This is necessary for the circuit breaker to continue operating correctly even in situations with high loads and temperatures.
  4. Wear resistance: When the circuit breaker is in operation, it can tolerate wear and friction and has good wear resistance, which prolongs its service life.
  5. Dust and moisture-proof: The rubber seal efficiently keeps moisture, dust, and other impurities out of the circuit breaker, preventing damage to the internal electrical components.
  6. Shock and shock absorption: The flexibility and shock-absorbing qualities of the rubber brake diaphragm seal help to provide a stable working environment by minimizing vibration and impact caused by the circuit breaker operating.
  7. Excellent dimensional stability: The rubber brake diaphragm seal exhibits good dimensional stability and can withstand variations in temperature and pressure without losing its size or shape, guaranteeing dependable sealing performance.
Conclusion

The rubber brake diaphragm seal is an essential component of circuit breakers, assuring safe and effective operation. Its excellent chemical and heat resistance allows it to withstand a wide range of liquid media and substances. Its good wear resistance further extends its service life. The seal is dust and moisture-proof, shielding internal electrical components from harm. Its elasticity and shock absorption properties lessen vibration and impact generated during operation. Moreover, its good dimensional stability ensures reliability in sealing performance under a variety of temperature and pressure conditions.