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An exhaust insulation blanket is a high temperature thermal cover designed to reduce heat radiation from exhaust systems, turbochargers, manifolds, and industrial engine components. It is built to contain heat inside the exhaust pathway, improving engine efficiency while lowering external surface temperatures.
An exhaust insulation blanket is commonly used in automotive, marine, diesel generator, and industrial equipment where thermal control is essential for safety and performance. Compared to simple heat wraps, insulation blankets are thicker, engineered with multiple protective layers, and offer significantly higher temperature resistance.
The blanket holds heat inside the exhaust system, preventing it from radiating outward. This increases exhaust gas velocity and improves turbocharger response.
By containing heat, the external surface temperature of exhaust components drops significantly, helping reduce the risk of burns and protecting nearby hoses, wiring, and sensitive parts.
Heat control creates a safer working environment and improves engine efficiency by maintaining optimal exhaust flow temperatures.
The inner layer is commonly made from high temperature fiberglass or advanced silica insulation materials.
A stainless steel mesh is often used to reinforce the inner insulation and maintain structural stability.
The outer layer is traditionally made from silicone-coated fiberglass, aluminized fabric, or high temperature textiles designed to resist oil, moisture, and abrasion.
Continuous operating temperatures vary depending on material type:
Up to 650 degrees Celsius for standard models
Up to 1000 degrees Celsius or higher for high temperature versions
Short-term exposure ratings can exceed 1200 degrees Celsius depending on coating and structural thickness.
Thermal performance is usually measured by:
Heat reduction percentage
Surface temperature drop
Insulation retention over time
Fits over turbo housings to improve turbo spool time and reduce under-hood heat.
Used on exhaust manifolds to lower external temperatures.
Applied on longer exhaust sections to maintain heat flow.
Designed for generators, boilers, turbines, and marine engines.
Reduces under-hood heat, improves turbo performance, protects wiring and hoses.
Used in stationary power generation to maintain heat efficiency and worker safety.
Essential for preventing radiant heat in compact engine rooms.
Applied to turbines, boilers, and exhaust ducts where thermal control is necessary.
Heat reduction and thermal stability
Reduced burn risk for technicians
Improved engine efficiency
Lower ambient temperatures in engine bays
Extended lifespan of hoses and wiring
Improved turbocharger response
| Feature | Exhaust Insulation Blanket | Heat Wrap |
|---|---|---|
| Thickness | Thick multi-layer | Thin single-layer |
| Temperature Rating | Higher | Moderate |
| Durability | Long lasting | Shorter lifespan |
| Industrial Use | Yes | Limited |
| Ease of Removal | Removable and reusable | Not reusable |
Summary: Exhaust insulation blankets outperform heat wraps in protection, durability, and long-term thermal efficiency.
Measure the turbo, manifold, or exhaust pipe dimensions accurately.
Choose a blanket based on maximum expected exhaust temperature.
High temperature models are recommended for racing, industrial, and diesel applications.
Position the blanket over the exhaust part
Secure using built-in stainless steel ties or locking wire
Ensure edges are fully covered
Locking pliers
Stainless steel ties
Wire cutters
Gaps left uncovered
Incorrect size selection
Loose ties that allow heat to escape
Clean the blanket using mild water if dirty
Inspect for tearing or fiber exposure
Replace if outer coating becomes brittle
Check stainless steel ties regularly
Key points when choosing a supplier:
Quality of insulation materials
Temperature rating
Layer thickness
Availability of custom-made sizes
Industrial testing results
Most exhaust insulation blankets can withstand continuous temperatures between 650 and 1000 degrees Celsius depending on material thickness. High temperature versions may handle peak exposures above 1200 degrees Celsius for short durations.
Yes. By containing heat within the exhaust system, exhaust gas velocity increases, which can improve turbocharger spool time and overall engine efficiency.
Yes. Exhaust insulation blankets significantly reduce radiant heat in the engine bay, protecting surrounding components such as wiring, hoses, and sensors.
Yes. They are widely used in marine engine rooms to reduce radiant heat and improve safety in confined spaces.
No. Exhaust insulation blankets are designed to cover exhaust parts without causing corrosion or damage. High quality versions include stainless steel mesh or protective barriers to prevent moisture absorption.
Service life depends on temperature conditions and environment, but well-constructed blankets can last multiple years with proper inspection and maintenance.
Choosing the right model requires understanding temperature ratings, material construction, application requirements, and installation needs. With the correct blanket in place, engines and machinery operate more efficiently, reliably, and safely.
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Email : sales@bstbraidedsleeve.com
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