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We know total safety is important to you and protecting your people in an HF-Alky service is priority one! This is why we have designed the Change-HF™. This gasket is the superior choice in HF-Alky service. The Change-HF™ protects and outperforms every other HF-Alky gasket on the market.

> Flexibility of a proven spiral wound, low seating stress of a kammpro
> Graphite filled like a spiral wound, graphite faced like a kammpro
> Sigma PTFE inner ring barrier protects the flange from acid corrosion and also fills any existing corrosion damage
> Unique wire profile stores more elastic energy to create better dynamic performance and superior load retention in cyclic applications
> Excellent recovery (tested with 34% recovery @ 18K PSI [124 MPa], 30% compression)
> No spring washers needed,  no re-torque required*
> Cycle over & over, and maintain sealability

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  • Find Allied Distributor
    Find Allied Distributor

    Search our authorized network of Flexitallic Allied Distributors.

  • Live Chat With Engineer
    Live Chat With Engineer

    Speak live with a Flexitallic engineer for your product or application.

  • Quick Gasket Search
    Quick Gasket Search

    Search by pressure, temperature, media and/or flange design.

  • Another First from Flexitallic
    Another First from Flexitallic

    Flexitallic Upgrades Standard Graphite

  • Start the Fight Against Corrosion
    Start the Fight Against Corrosion

    CHANGE-HF and CHANGE-CR

  • Training Seminar
    Training Seminar

    Schedule your flange assembly and bolting training seminar

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