The cost of a new gasket is minuscule compared to the cost of downtime caused by a leak or blowout and the considerations of safety and environmental protection.
Most gaskets will be modified dramatically under operating conditions. Even though the full metal properties of the DeltaV-Seal deteriorate at a much slower pace, the gasket compress and takes a permanent set upon bolt up. The gasket’s whole design is to conform to the flange face and seal, and you can never install it exactly the same place the second time.
Therefore, in order to seal efficiently a second time the gasket will need to conform to the flange a second time. Due to the sealing principle of the DeltaV-Seal, the sealing contact area will be significantly larger compared to the original installation. Hence, to conform again the installation force must be substantially higher.
This does not mean that it is impossible. Under the correct circumstances, and with available additional installation force from the bolts and flanges, testing has shown that the DeltaV-Seal can be tight through several installations. However, we highly advise against the re-use of DeltaV-Seal and the re-use of flange gaskets in general. We take pipeline integrity very seriously and it is near impossible to predict the behavior of any gasket when it is re-used.