This product has good electrical insulation properties, arc resistance and arc extinguishing properties.There are three types of products:                                         

1.they are all vulcanized fibre tube.                                 

2.The outer layer is kraft paper, The inner layer is     vulcanized fibre tube. It is a composite material.         

3.The outer layer is fiberglass,The inner layer is vulcanized fiber tube. It is a composite material.   

This product applies to:                                           

"K" type high-voltage fuse link                                   

"T" type high-voltage fuse link                                   

"F" type high-voltage fuse link                         

Capacitor dedicated fuse link