The vast majority of adhesives begin to weaken or fail by ~250°C (500°F), but a few adhesives claim to be able to survive higher temps.
| adhesive | claimed max temperature | ||||
|---|---|---|---|---|---|
muffler/exhaust sealant
|
| 450°C (850°F) 1100°C (2000°F) 1000°C (1800°F) J-B Weld HighHeat Epoxy Putty
| 230°C (450°F) continuous
| 260°C (500°F) intermittent J-B Weld ExtremeHeat
| 540°C (1000°F)
| |