CLAYBORN HOT TUBE™ At the heart of this innovative process is Clayborn Precision Heat Tape, machine wrapped on continuous lengths of tubing ranging from 1/4" O.D. up to 1 3/4" O.D. Clayborn engineered to your exact wattage requirements, pre-traced coils are ready for customer cutting and termination. If a completely finished unit is what you want, FAX or E-Mail your requirements and you will be amazed how inexpensive HOT TUBE or HOT TUBE DELUXE solutions can be. HOT TUBE heated tubing is used in gas analysis, instrumentation, fluid flow, adhesives, food processing, and medical industries.