Image of RIGFLEX FP Gasket (Reverse Integrity Gasket FP)
Image of RIGFLEX FP Gasket (Reverse Integrity Gasket FP)


RIGFLEX™ FP, Reverse Integrity Gasket, is designed to suit raised-face flanges (such as those specified in ASME B16.5)

RIGFLEX™ FP is a Reverse Integrity Gasket designed to allow asset operators not to pressure a whole pipeline when they only want to check the integrity of a specific bolted connection

Reverse Integrity Gaskets empower asset operators to pressurise individual connections post-reassembly and controlled tightening. This localised testing approach eliminates the need for pressure-testing the entire pipeline. The advantages of adopting Reverse Integrity Testing include:

  • Reduced downtime by bypassing the necessity to pressurise the entire system, thus avoiding potential issues elsewhere on ageing assets.
  • Enhanced Health, Safety, and Environmental (HSE) standards. Human interaction with potentially hazardous pressurised systems is minimised by eliminating the need for comprehensive pressure testing.
  • Significant cost savings stemming from reduced time and resources required for pressure testing an entire system.


The RIGFLEX™ FP comes equipped with dual Flexpro™ seals featuring Corriculite® facing. Corriculite® has demonstrated effectiveness in preventing galvanic corrosion on flange faces, enhancing reliability for the operator and contributing to reductions in fugitive emissions.

RIGFLEX™ FP comes complete with a 316 Stainless Steel core as standard. Other materials are available upon request.

Flexitallic Engineering is poised to provide alternative designs tailored to your specific requirements. Feel free to get in touch with us for more information.


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