Automotive Exhaust Packing Material
This product is a high-temperature resistant glass fiber composite material specially developed for the severe working conditions of exhaust systems of automobiles and various power equipment. Adopting a precise formula of high-purity glass fiber, high-temperature inorganic binder and modified additives, it is manufactured through 1200℃ high-temperature curing and multi-layer directional layering technology.
- Product Introduction
Products Description
Automotive Exhaust Packing Material is a customized high-temperature resistant glass fiber composite material tailored for five severe working conditions of automotive exhaust systems. It is widely applied in passenger car mufflers, tail drums, three-way catalytic converter gaskets, GPF/DPF encapsulation layers, heavy-duty truck exhaust pipes and construction machinery exhaust assemblies. Formulated with high-purity heat-resistant glass fiber, high-temperature inorganic binder and flexible modified additives, and processed via 1200℃ high-temperature curing and multi-layer uniform carding shaping, all core performances are verified by third-party bench tests with measurable indicators. The material effectively solves common exhaust system defects and fully adapts to OEM certification, mass production, after-sales maintenance and refitting scenarios.
Core Product Features
Competitive advantage
Adopting high-silica high-temperature resistant glass fiber, the material supports continuous operation up to 1000℃ and peak temperature up to 1100℃. It features thermal shrinkage ≤1.5% (1000℃/24h) and performance attenuation ≤8% after 500 cold-heat cycles. Its service life is over 3 times that of ordinary glass fiber, fully meeting OEM long-term durability requirements.
01
The gradient porous glass fiber structure effectively suppresses full-band exhaust noise with 15-28dB overall noise reduction. After 2000-hour vibration fatigue test, the material maintains ≥96% structural retention, effectively improving vehicle NVH and avoiding exhaust pipeline fatigue damage.
02
The flexibly modified glass fiber precisely fits 0.2-5mm assembly gaps and stabilizes exhaust back pressure within ±3%. With excellent corrosion resistance (mass loss ≤2.1% after 1000h humid corrosion test), it reduces exhaust system failure rate by over 42% and extends component service life.
03
With controllable dimensional tolerance (thickness ±0.3mm, areal density deviation ≤5%) and tensile strength ≥0.25MPa, the material features stable cutting performance and assembly consistency. It adapts to automatic and manual installation with a mass production yield of over 99.2%, reducing overall assembly costs.
04
Made of eco-friendly glass fiber with 0% asbestos and ultra-low VOC, the material reaches GB 8624 Class A non-combustible grade. It causes less than 1% sensor signal error under high temperature, ensuring safe and compliant application for Euro VI, China VI and new energy hybrid vehicles.
05
Product Application
Specialized application solutions for specific industries
Passenger cars
Application Parts: Muffler tail drum, middle/rear exhaust pipe, three-way catalytic converter liner, hybrid vehicle high-temperature exhaust encapsulation gap.
Industry Pain Points: High requirements for vehicle quietness; exhaust howling and chassis resonance during idling and acceleration; frequent cold-heat cycles of hybrid vehicles cause ordinary filling materials to pulverize and collapse, leading to tail gas leakage and unstable emission data.
Solution: Adopts gradient porous sound-absorbing structure and cold-heat cycle resistant formula to stabilize sealing and vibration suppression.
Value: Reduces idle noise by 18-22dB and chassis temperature by 12-18℃; cuts exhaust system failure rate by 42% and stabilizes emission data, meeting OEM durability and emission standards.
Commercial vehicles
Application Parts: DPF/GPF encapsulation layer, heavy-duty exhaust pipe assembly, vertical/horizontal muffler.
Industry Pain Points: Long-term heavy-load operation with 800-1000℃ high exhaust temperature and strong vibration; ordinary materials fail quickly, causing filter loosening, abnormal back pressure and power attenuation.
Solution: Ultra-high temperature and vibration resistant formula with stable structural performance under continuous heavy-load working conditions.
Value: Extends service life by 3 times, reduces DPF failure rate by 38%, and minimizes vehicle downtime and fleet operation costs.
Engineering vehicle
Application Parts: Construction machinery diesel engine exhaust assembly, external muffler, tail gas purification device insulation layer.
Industry Pain Points: Extreme outdoor working conditions with high temperature, rain, salt spray and continuous strong vibration, leading to rapid aging and failure of ordinary materials.
Solution: Excellent weather resistance, corrosion resistance and vibration resistance for all-weather outdoor operation.
Value: Reduces equipment operating noise by 15-25dB, improves exhaust assembly service life by 40%, and ensures stable operation of field equipment.
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Why choose us
Fully Verified & OEM Qualified Performance
All technical data are bench-tested and verifiable, including thermal shrinkage, thermal cycling resistance, noise reduction, vibration stability and corrosion resistance.
Flexible Customization & Stable Delivery
Custom thickness (2–20mm) and density (800–3200g/㎡) available, including special-shaped and non-standard cutting.
Professional Focus on Exhaust System Special Materials
We specialize exclusively in high-temperature glass fiber materials for automotive and machinery exhaust systems.
FAQ
Q: How effective is the Automotive Exhaust Packing Material noise reduction? What exhaust noise problems does it solve?
A: Utilizing a gradient porous fiberglass structure (porosity 82%±3%), it simultaneously suppresses low-frequency pipeline resonance (10-50Hz) and high-frequency exhaust whine (2000-5000Hz). Actual measurements in a semi-anechoic chamber show a comprehensive noise reduction of 15-28dB, effectively resolving common industry problems such as vehicle idling noise, acceleration whine, and chassis resonance.
Q: Will the filling layer loosen and fail after vehicle vibration and bumps?
A: No. After 2000 hours of high-frequency vibration fatigue testing (10-50Hz, 0.5mm amplitude), the material filling retention rate is ≥96%, with no delamination, loosening, or shedding. It can be used long-term in commercial vehicles and construction machinery under high-intensity vibration and bump conditions.
Q: Does the product support customization? How is the dimensional accuracy and consistency?
A: Full-specification customization is supported. Standard thickness 2-20mm (tolerance ±0.3mm), areal density 800-3200g/㎡ (deviation ≤5%), uniform and stable thickness and weight, high dimensional accuracy, custom-cut to irregular shapes, suitable for various mufflers, catalytic converters, and particulate filters with non-standard structures.
Q: Compared to ordinary filler materials, what are the core improvements after customer use?
A: 1. Overall exhaust system failure rate reduced by more than 42%, significantly reducing after-sales maintenance; 2. Material lifespan increased by 3 times, reducing replacement frequency; 3. Significantly improved NVH (noise, vibration, and harshness) quietness of the entire vehicle, resolving abnormal noise complaints;
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