Which type of sling would NOT be suitable for high-temperature loads?

Polyester slings are not suitable for high-temperature loads due to the material's limitations in heat resistance. Polyester is a synthetic material that can begin to lose its strength and structural integrity at temperatures above 194°F (90°C). When exposed to high heat, polyester slings can melt or degrade, posing a significant risk of failure.

In contrast, wire rope, metal mesh, and chain slings are better suited for high-temperature applications. Wire rope slings can withstand much higher temperatures, typically up to around 400°F (204°C) and sometimes higher if appropriately designed. Metal mesh slings and chain slings also maintain strength and performance at elevated temperatures, making them more reliable choices for handling high-temperature loads.