Stainless Steel Wool
LFJ’s Stainless Steel Wool (SUS Wool) is a premium metallic acoustic material engineered for extreme environments. Manufactured from high-quality stainless steel alloys (SUS 434, 430, 446), it boasts exceptional continuous heat resistance up to 800°C (1472°F) and outstanding corrosion resistance. Primarily used as a protective thermal and acoustic barrier in automotive and motorcycle exhaust silencers, it effectively absorbs low-frequency noise while preventing the blowout of fiberglass packing materials under high exhaust pressure.
Product Overview
In modern high-performance automotive and motorcycle exhaust systems, acoustic packing materials must withstand the rigorous trials of extreme high temperatures, intense vibrations, and highly corrosive exhaust gases. Silencers relying solely on fiberglass often suffer from material blow-out due to the continuous scouring of high-pressure exhaust, leading to a drastic decline in acoustic performance. To solve this pain point, LFJ developed industrial-grade Stainless Steel Wool (SUS Wool).
LFJ's SUS Wool is manufactured through a precision machining process that transforms solid stainless steel into continuous, highly tenacious metallic fibers. When wrapped around the perforated tube of a muffler, it forms an extremely heat-resistant (over 800°C) and corrosion-resistant metallic protective barrier. Not only does it possess excellent low-frequency sound absorption capabilities on its own, but it also effectively reduces thermal conductivity and securely locks the outer layer of fiberglass packing in place. It is the crucial acoustic substrate ensuring long-lasting muffler life and a deep, resonant exhaust tone.
Core Product Features
- Outstanding Thermal & Corrosion Resistance
- Excellent Blow-out Protection
- Superior Acoustic & Thermal Performance
Main applications
- Automotive & Motorcycle Exhaust Mufflers
- Heavy Industry & Generator Noise Control
- High-Temperature Gas Filtration
- Material grades: SUS 434, SUS 430, SUS 446
- Continuous operating temperature: 700°C - 850°C (depending on material grade)
- Supply type: by roll
- Standard width: 100 mm
- Fiber filament: 60~80 micron, 80~120 micron, 120~150 micron
- Flammability: 100% Non-combustible
(√ As a professional material supplier, we offer various stainless steel grades to meet different budget and operational requirements.)
- Rolled stainless steel wool
- Pipe winding
- Formed stainless steel wool
1. Why is it necessary to use BOTH Stainless Steel Wool and Fiberglass when manufacturing an exhaust muffler?
This is the industry-recognized perfect combination for acoustic thermal management. Fiberglass has excellent high-frequency sound absorption but cannot withstand the extreme instant heat and high-pressure gas scouring directly against the perforated tube. Therefore, the standard practice is to first tightly wrap the Stainless Steel Wool around the perforated tube as the first line of armor to block heat and gas pressure, and then wrap the Fiberglass packing on the outside. This composite structure ensures the fiberglass never blows out, creating a deep, clean, and resonant exhaust note.
