What type of insulating material might be used on a boiler?

Mineral wool and fiberglass are commonly used as insulating materials on boilers due to their excellent thermal performance and resistance to high temperatures. These materials help to reduce heat loss from the boiler, improving energy efficiency and reducing operating costs. Additionally, they are non-combustible, making them a safe choice for applications near high-heat sources like boilers.

Mineral wool provides effective insulation properties, is resistant to moisture, and can withstand the conditions typically found around hot surfaces. Fiberglass insulation offers similar benefits and is widely used due to its availability and cost-effectiveness. Both materials play a crucial role in ensuring that boilers operate efficiently while preventing overheating and energy waste.

In contrast, other options are less suitable for boiler insulation due to factors such as lower heat resistance, potential for fire hazards, or inadequate insulating properties.