The aid enables the extrusion rate to be increased while maintaining the melt stability and a good extrudate surface quality.

Also disclosed are electrical devices including an electrically insulating portion, wherein the insulating portion is an extruded compound having low surface roughness at typical operating extrusion rates.

Bow can be caused by a non-uniform extrusion rate across the cross section resulting in one portion of the extrusion being longer than the other or non-uniform contraction during quenching.

A bow can be caused by a non-uniform extrusion rate across the cross-section resulting in one portion of the extrusion being longer than the other or non-uniform contraction during quenching.