The PinchLock heavy security seal is made of high-class polypropylene. It has a feed-stop to prevent wrong threading.
This security seal has a high tensile strength and is very popular for sealing road tankers, silos or for use in the refinery industry. Equally the PinchLock heavy security seal is good for sealing truck transports.
Every PinchLock heavy pull-through seal has a unique serial number. They can be closed by hand and can be opened using scissors.