Graphite Reinforcement and Construction

Flexicarb ST, designated RGS 3, is a 316 stainless steel tanged core reinforced graphite sheet. The graphite facings are mechanically bonded to the metal core without adhesives, enhancing blowout resistance and handling integrity.

Applications and Thermal Limitations

The Flexitallic data sheet specifies power generation, petrochemical processing, and high-bolt-load applications. It distinguishes between 370°C in oxidizing environments and 700°C in inert or reducing atmospheres. The historical maximum rating of 200 bar cannot be assumed concurrently at 700°C. Graphite must be avoided in strongly oxidizing media, and thermal cycling demands mechanical verification.

Preparing for a Replacement

The tanged core construction aligns Flexicarb ST closely with FGT316, GRAPH-LOCK 3125TC, and GE1520 designs, though this does not indicate direct interchangeability. Always verify the precise media, thermal cycling, external oxidation, material thickness, and flange bolt loading.

Other constructions to evaluate: Durlon FGT316 and Garlock GRAPH-LOCK 3125TC. These are technical comparisons, not direct equivalents.