Glossary
Bolted flanges connections - TBSS Method (Tight Between Seal and Strength)

Bolted flange assemblies

Mechanical connections consisting of flanges, a gasket, and fasteners, ensuring the structural integrity of the system and pressure-tight sealing.

Metal-to-metal contact

A configuration in which rigid flange surfaces come into contact, limiting compression of the gasket and stabilizing the mechanical behavior of the assembly.

Effective gasket diameter

The diameter at which the gasket’s contact load is in equilibrium.

Back pressure

The axial resultant of the internal pressure on the fluid section in question; it tends to push the flanges apart and must be balanced by the clamping force in the bolting.

Umbrella effect

The flexural deformation...