Blood Bag Tube Sealers close PVC blood bag tubing with high-frequency dielectric heating, which melts the tubing wall from within to create a leak-proof seal without open flames or metal clips. Sealing completes in about one to two seconds, allowing up to 30 tubes per minute during donor sessions and component processing. Adjustable sealing time and power settings suit different tubing diameters and wall thicknesses. The sealed segment can be separated cleanly for sample tubes and crossmatch testing. Sterile, closed-system handling lowers contamination risk. Typical users include blood banks, blood donation centers, transfusion units, hospital labs and mobile collection drives.