Anyone know what this is?

[xxxencorexxx]

Posting on behalf of pete180, he found this in the gearbox driveshaft hole with a rag stuffed in it, it came out with the rag but wasn't wrapped up just fell out.
Any help would be appreciated,

Thanks

 

[oldtimer]

Its part of the driveshaft seal

 

[xxxencorexxx]

Thats brilliant, ive notified him. Thank you mate.