What is the difference between pink, blue and grey PTFE thread seal tape?

Foreverseal® positions pink, blue and grey PTFE thread seal tapes for different industrial sealing needs. Pink tape is a high-density option suitable for demanding plumbing, fire protection and industrial piping applications. Blue tape is designed for general industrial equipment, machinery, pneumatic and compressed air systems. Grey tape is particularly suitable for stainless steel and other metal threaded fittings. Final selection should always be based on the specific connection and service conditions.