Handheld Clamshell Sealer Electric Manual Point Sealer with Small Screw and Nut Drivers. This lightweight sealer can be used to weld OPS, PSP, PVC, EPS cases and is ideal for clam shells. It is a constant heat device with high and low settings. It provides an inexpensive alternative to traditional ultrasonic or radio frequency sealing. High impact plastic housing with Teflon-coated sealing surface. 110-120V single phase, 14.5 watts and weighs 12 ounces. Low Setting: 180°C/360°F High Setting: 210°C/415°F Seal size: .4 x .16 inches)