The idea behind solid material is to use metals which cannot be punched out of sheets but are still cheap to produce. These gaskets generally have a much higher level of quality control than sheet gaskets and generally can withstand much higher temperatures and pressures.
The key downside is that a solid metal must be greatly compressed in order to become flush with the flange head and prevent leakage. The material choice is more difficult; because metals are primarily used, process contamination and oxidation are risks. An additional downside is that the metal used must be softer than the flange — in order to ensure that the flange does not warp and thereby prevent sealing with future gaskets. So many manufactures would like to choose our knife cutting machine[cutting machine?:CUTCNC sample maker cutting machine], use CNC control knife cutting, instead of making die cut mold for small production.
Even so, these gaskets have found a niche in industry.
