Hose Clamps

Badass! The spring clamp style offer superior clamping over a wide range of temperatures. Look up the shrink wrap style hose clamps (plastic rings you heat and they shrink on, one time use only) and they have a graph on what clamp loads do when they get hot.
Gates® PowerGrip® SB Clamp | Gates Corporation
The traditional worm gear clamp sucks at operating temp! Corbin clamp load is uniform throughout the operating range.