Sport Pilot Talk

I am contacting the dealer about it but , in the meantime, wondering if you guys have some ideas on what kind of thread sealant this would be for this set of M8 screws ?

It is white, dried out feels almost like some kind of silicone compound but obviously it had pretty low viscosity when originally applied judgning by the stains ...

What is the part from or do?

It is the front wheel fork attachment - 200 lbs torque per each bolt so I presume it is some kind of threadlocker/sealant combination.

Not directly applicable, but...
The Rotax maintenance manual and illustrated parts catalog specifiy the exact type of threadlock and torque they use on every fastener in their engines.
If the airframe maint manual and IPC don't specify for that part, I'd look for an M8 bolt in the Rotax engine that's torqued to 200 ft lbs, and use what they specify.

Thanks, I was actually thinking about using Loctite Blue ( 242) which is what Rotax recommends for their gear box installation ( with similar bolts , 195 inch lbs torque )

That sounds like just the right stuff!

Loctite® Threadlocker 242™

The typical repairs that utilize this type of medium strength threadlocker range from valve cover bolts to carburetor studs. This is known as our all-purpose threadlocker, and is also known as the “original threadlocker.” It eliminates the need for expensive lock nuts and lock washers, seals even when it vibrates, and protects threads from corrosion.

Loctite® Threadlocker 243™

Loctite 243 threadlocker is an upgraded version of Loctite 242, and is more of a general-purpose member of our “blue crew.” It is designed to have improved oil tolerance with surface-insensitive properties (plated fasteners no longer require primer), combined with the same overall benefits of the original Blue Threadlocker 242. Projects that would need this type of application include rocker studs, oil pans, disc brake calipers, pulley assemblies and many more.