Munaco Sealing Solutions

KLINGERSIL® C-7400 Transformer Gasket Material

Chemically resistant Gasket sheet also has excellent dielectric strength. Leak less. Last longer. Trust KLINGERSIL® C-7400 for transformer sealing performance that stands the test of time.

When transformer reliability is on the line, sealing performance matters. KLINGERSIL® C-7400 is a premium compressed fiber gasket material engineered to deliver long-lasting sealing performance in demanding oil-filled electrical equipment and industrial applications. Manufactured with synthetic fibers and an EPDM binder system, C-7400 combines excellent chemical resistance, superior aging characteristics, and dependable sealability to help prevent costly oil leaks and extend equipment service life.

Protect your transformer investment with custom gaskets manufactured from KLINGERSIL® C-7400. Designed for exceptional sealing reliability, C-7400 delivers the oil resistance, dielectric strength, and long-term durability required for today's power distribution and industrial transformer systems. Its low permeability, excellent sealability, and resistance to aging help reduce leaks, minimize maintenance costs, and improve equipment uptime. Whether used in new transformer production or maintenance and refurbishment programs, KLINGERSIL® C-7400 provides the dependable performance that utilities, OEMs, and service providers trust for critical electrical infrastructure.

Why C-7400 Is Ideal for Transformer Applications

Transformers require gasket materials that can withstand continuous exposure to insulating oils, temperature fluctuations, and years of compression without losing sealing integrity. KLINGERSIL® C-7400 excels in these critical areas:

  • Excellent Oil Resistance helps maintain gasket performance when exposed to transformer insulating fluids and oils.
  • Outstanding Aging Properties support long service life and reduced maintenance requirements in utility and industrial transformer installations.
  • High Dielectric Strength (22 kV/mm) provides an additional level of electrical insulation performance, making it particularly well-suited for electrical equipment applications.
  • Low Gas Permeability and Excellent Sealability help minimize fluid leakage and protect valuable transformer assets from contamination and oil loss.
  • Strong Recovery and Compression Characteristics allow the gasket to maintain sealing force despite thermal cycling and equipment vibration.
  • Chemical Resistance to moderate acids and caustics adds durability in challenging operating environments.

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Click Here to download KLINGERSIL® C-7400 Transformer Grade Compressed Fiber Gasket Material Data Sheet!

KLINGERSIL® C-7400 Transformer Gasket Material