The material of the car seal really makes no difference to its function. It’s a matter of personal preference. It’s important to remember that this is NOT a locking device. The valve car seal is not design to resist tampering, therefore the strength of the seal is not a factor.

Instead its purpose is to remind workers that the valve shouldn’t be operated without referring to supervision or process procedures.

With regard to materials, note that plastic zip-tie style valve seals tend to be shorter in length and might not be suitable for larger valves. Whereas steel cable car seals are much longer and more versatile.

Conversely, plastic seals are much easier to cut, when it comes time to remove them. Contact us for advice on what car seal you should use.