HP Heaters Manhole Gasket

The HP manhole gasket uses a composite structure of “0Cr18Ni9 + Graphite”. It is a high-performance sealing component designed for the high-temperature, high-pressure, and corrosive working environment of boiler high-pressure heaters (HPs). This combination leverages the strength and corrosion resistance of 0Cr18Ni9 stainless steel and the excellent sealing properties and elasticity of graphite.

Performance Parameters of HP Heaters Manhole Gasket

• Operating temperature range: The high-temperature resistance of graphite allows this gasket to work at high temperatures, typically ranging from -20°C to 650°C.

• Operating pressure range: The high strength and toughness of 0Cr18Ni9 enable it to withstand high pressures, making it suitable for medium-to-high pressure environments.
• Sealing performance: The self-lubricating and chemical stability of graphite, combined with the corrosion resistance of 0Cr18Ni9, ensure the gasket’s sealing performance in harsh environments.

Installation and Maintenance

• Installation:

  • Ensure the flange surface is clean, free of impurities and scratches.
  • The gasket should be placed evenly between the flanges to avoid uneven stress.
  • Tighten the bolts uniformly to ensure even pressure on the gasket.
• Maintenance:
  • Regularly check the gasket’s sealing performance and replace it promptly if it is damaged.
  • Avoid prolonged use in over-temperature or over-pressure environments to extend the gasket’s service life.