Wires & fabriks [sa] ltd offers dust collector bags made from fabrics [felt] imported from testori of italy. There are other products available for high temperature, chemical environment applications in nomex, ryton, etc, with special coating if required. The bags can be supplied in various sizes which differ in diameters, lengths with ends as specified by the users. The unique feature in these kind of bags is that stitching is replaced with ultrasonic sealing to eliminate dust leakage. Testori is one of the largest producers of felts and fabrics for dust collection applications.