Gasket
The job of every gasket is to fill an uneven gap between two surfaces, forming a barrier that stops fluid from moving to where it shouldn’t be. Larger gaps and more uneven surfaces need a softer. For example, a between two parallel machined pipe flanges can be hard, resisting loads as the joint faces are tightened together. In contrast, the sealing of an electrical enclosure needs to be softer and compress more because the enclosure door will tend to bend as it’s latched.
