After first seeing this its got me thinking. Sure I've seen a ceramic tube somewhere but can't think where I've seen it! I can see it in my head it's sort of a pinky ceramic colour, think it might have been on an ignition coil. If it comes to me and it is the right sort of size I'll let you know Cheers @ZT, sorry thought you were into salties. Not sounding good if it has resin in.