High Temp Silicon Gasket Sealant

I’ve a LX 125 with a PM 56 SS exhaust. I’m looking for a high temperature silicon gasket sealant to put in between the two exhaust parts because it squeels.
I have already tried two different solutions but none works. The highest temp silicon sealant I’ve found only resists ±340 c° and burns away. The other product, Holtz firegum resists the high temps but „breaks“ away because it get very hard and the exhaust moves a lot.
Can you help me?

Thanks in advance!


you can get special exhaust repair sets in the shop’s for car equipment. try this