The exhaust system is an essential element of anycar. It is this one that ensures unhindered discharge of gases, reducing their toxicity, noise and temperature. In addition to catalysts, resonators and other components, the system has a silencer. It is a kind of final link in the chain and serves as an acoustic filter. But the muffler has the ability to burn. Sometimes it is not possible to seal the hole with welding or replace the element with a new one. Then sealant for the muffler comes to the rescue. This is a great way to repair a part of the exhaust on the way, spending a minimum of time on it.
Why is this happening?
Silencer constantly exposed to aggressiveimpacts. This is moisture, road reagents, large temperature drops. Plus, inside the element is subject to strong vibrations. Because of this, the partitions and the “bank” itself lose their former strength.
Symptoms of a malfunction
Determine the failure is very simple.If there is a burnout in the muffler, it will no longer dampen sound vibrations. Gases will seep out through the shortest path, bypassing acoustic partitions. In fact, this is accompanied by a loud exhaust.
Sealant properties
What does the sealant do for the muffler?This is a compound that after application acquires a solid form and does not allow gases to leak out. It is a kind of liquid patch, which is usually used as a temporary repair. Sealant differs from ordinary glue not only in consistency, but also in characteristics. So, it is very heat resistant. Silicone sealant is able to maintain its structure at 1300 ° C and more. It can be used both at joints for repairing cracks and at burnout sites. The sealant is resistant to moisture and water, is not afraid of sound vibrations.
How to use?
Instructions for use are quite simple.It is enough to clean the damaged surface of dirt and apply the composition of the tube. It is not necessary to remove corrosion - many manufacturers allow application on a rusty surface. It is important that the composition completely covers the burned hole. Next, you need to wait until the heat-resistant silicone sealant acquires a solid look. Each manufacturer of this period is different - from 30 minutes to 2 hours. Full hardening lasts about a day at a temperature of +20 ° C. Which sealant for the muffler is better to choose? To answer this question, below we have compiled a list of the most popular products that are used in the domestic market.
"Likvi Moli"
This is a very famous German company, longProved for its high-quality products. The company "Likvi Moli" produces good sealants for silencers. The product is designed to improve sound insulation and prevent corrosion at joints. It is a ceramic muffler sealant that can withstand exhaust pressure at temperatures up to 1,400 ° C. The price of a 150-gram tube is 400 rubles.
CRC Silicone Sealant
This is probably the fastest drying sealant forhigh temperature muffler. It hardens after 10 minutes of operation of the engine at idle. Great for repairing breakdowns in transit or just for repairing cracks. It works at temperatures up to 1300 degrees and provides high-quality sound insulation and protection against unauthorized release of gases to the outside.
"Permatex"
The composition is a kind of putty thatwithstands heating up to 1000 ° C. Suitable for sealing pipes, seams, silencers and resonators. Apply directly to the damaged area, pre-cleaned of dirt and rust. Hardens after 30 minutes. The cost of a tube weighing 200 grams is 290 rubles.
"Abro"
Very popular product in Russia.A tube weighing 150 grams can be bought for 170-200 rubles. The manufacturer describes the composition as a "silencer cement". The product in a short time turns from a pasty state into a real stone.
Conclusion
So, we found out what constitutessealant for the muffler. With this tool you can quickly repair the damaged area without involving welding machine. Moreover, the damage can be fixed locally without removing the muffler from the spot. It is very convenient and fast.
