thermal barrier
heat barrier

After the Challenger accident, these seals were reinforced with secondary rings and with additional thermal barriers at the joints.

But the gas never got past O-rings that had been put there as a thermal barrier, he said.

Third we engineered a dual lens design to reduce fog with a thermal barrier of trapped air.

As a thermal barrier, Rastra has a four-hour fire rating with no flame spread and no smoke development.

He pushed past her, through the thermal barrier, and outdoors onto the wharf once more.

Its double-wall construction acts as a thermal barrier to keep solar heat outside and polar temperatures inside.

It is also used as a thermal barrier to restrict heat transfer from the workpiece to the die.

Toward this end, a layer of silicon dioxide is sometimes added to act as a thermal barrier.

Slab Heating efficiency is improved with the installation of a thermal barrier made of foam.

Together, weatherstripping and insulation create a thermal barrier between the inside and outside of the home.