English to Lithuanian Tech/Engineering Mechanics / Mech Engineering GASKETS

To guarantee a perfect tightness the gasket must be compressed to an established amount. For this reason, in case of spiral wound gaskets, the depth of female groove on the body, the height of raised face on to the bonnet and thickness of gasket itself must be kept within close tolerance to obtain the required gasket compression once the two mating flanges come into contact.
Great importance is given to gasket construction, especially for the tension applied to metal strip in coiling operation.
Once the two flanges come into contact, a sudden increase of torque force is perceived. No further torque is then required, even if the value is lower than the one listed on the chart.

coiling operation - ??? iš anksto dėkoju