Band Clutch : Circular type of clutch either of external contracting type or internal expanding type, having a band lined with heat and wear resistant friction material. (Spec 2C)
The Mudblogger (Oilfield, Energy and Related Photographs), Oil Field Glossary, TX, USA 2014. http://mudblogger.com/oilfield-glossary/, (Oil - Amer) {777}