# Glass hot-fixture and hearth protection

Graphite coating for trays, metallic skeletons, and hearths in contact with incandescent glass, to reduce sticking, marking, and thermal shock.

Family: Coatings / Release Agents

## Processes
- Glass bending and tempering
- Incandescent-glass transfer

## Challenges
- Marks on the glass
- Thermal shock of the fixture
- Even coverage on open geometry

## Advantages
- Reduces sticking on tray and hearth
- Film that withstands thermal shock
- Protects transfer fixtures

## Limitations
- Does not replace the bending-mold application
- The coating wears with the cycle
- May leave residue if over-applied

- [Applications](https://esgraf.com/en/applications)
- [Alternate](https://esgraf.com/aplicaciones/vidrio-proteccion-matrices)