I am looking for information on criteria for designing a spiral wound gasket joint based on pressure and temperature of the fluid. Primarily the sealing face width. I am familiar with ASME flange SWG data, but it just seems too wide a sealing face than I am familiar with and I know works. I primarily work on Boiler Feed Pumps. 23-26MPa typical pressures operating around 170C to 210C is not uncommon, and SWG seeing full pressure at diameters around 600mm-700mm. These typically only have a gasket sealing width of around 17mm at best with no inner nor outer rings. The SWG are housed in a cavity to prevent over crushing, but they generally have ample clearance ID & OD for expansion. I was just after some data to back what I see and know works.