There are many cases to apply mechanical joints which are often used in liquid and vapor systems that operate under temperature and pressure.
Generally, these mechanical joints are not absolutely tight and there is a limit to how well one will seal. A gasket[gasket?:gasket die cutting machine] seal is often used for mechanical joints that must seal tightly to prevent leaking and maintain operating performance. Gasket sealant is a material that is used in mechanical joints, alone or in combination with a gasket, to prevent the escape of a liquid or a gas.
