Norway’s Pipeotech extends its industry-first 10-year gas-tight warranty for its ground-breaking DeltaV-Seal™ gasket down to applications running at -196°C, based on stellar results of cryogenic leakage tests at a pre-eminent European research lab.
Pipeotech launched its metal-to-metal DeltaV-Seal in 2015. Backed by unique DNV GL type certification, DeltaV-Seal immediately set a new gas-tight standard for industrial gaskets, offering the first sealing solution that was proven to stay exceptionally tight over time with zero maintenance or retorquing required. After proving its efficacy in sectors ranging from hydrocarbons to chemicals processing, maritime, pharmaceuticals, and food and beverage production, in 2020 Pipeotech launched the sealing industry’s first 10-year gas-tight limited warranty, creating a truly unique value proposition and cementing the claim of being the tightest, safest and most durable flange gasket technology in the world.
Pipeotech has now blazed a new trail, conducting leakage testing of a bolted flange joint (BFJ) under cryogenic conditions in a laboratory testing program engineered and carried out together with the Wroclaw University of Science and Technology in Poland. The BFJ contained a DN40/PN40 material 316L DeltaV-Seal with a sealing length of 0.2 metres and containing helium pressures from 10 bar to 100 bar.
The results show that the DeltaV-Seal maintains a tightness level higher than 10-8 mg/s at temperatures down to -196°C at all tested pressures. The seal was also shown to expand and contract at the same rate as the temperature fluctuations, confirming in action that extreme temperature fluctuations do not affect the tightness of the seal.
