The key differences between black glass fiber exhaust wrap, graphite black exhaust wrap, and vermiculite black exhaust wrap lie in their materials and properties:

Black Glass Fiber Exhaust Wrap:
Material: Made from glass fibers that are treated with a black coloring.
Properties: Offers excellent heat resistance and is effective at reducing underhood heat. It also provides an aesthetic black finish.
Main Use: Primarily used to control heat and enhance the performance of the exhaust system.

Graphite Black Exhaust Wrap:
Material: Typically made from a fiberglass base material infused with graphite particles, giving it a black color.
Properties: Combines the benefits of fiberglass with the added heat resistance of graphite. It is effective at managing heat and maintaining exhaust temperatures.
Main Use: Used for heat control in exhaust systems, providing both insulation and an attractive black appearance.

Vermiculite Black Exhaust Wrap:
Material: Made from fiberglass fabric coated with vermiculite, a naturally occurring mineral that expands when heated.
Properties: Vermiculite coating enhances heat resistance and can withstand even higher temperatures. It also adds a black finish.
Main Use: Often used in high-temperature applications where extreme heat management is required, such as turbocharger components.

In summary, while all three types of wraps are designed to control heat in exhaust systems and provide a black appearance, the differences lie in the specific materials and properties they offer. Black glass fiber exhaust wrap is suitable for general heat control and aesthetics. Graphite black exhaust wrap combines the benefits of fiberglass with added heat resistance. Vermiculite black exhaust wrap is ideal for extreme heat applications where the highest level of heat management is required. The choice between them depends on your specific needs and the temperature requirements of your exhaust system.