01-01-2015, 08:00 AM
Yes, I am because the PTFE in that spec is going to be made by a limited number of extruders with sheet dies, and just like a metal alloy it has to have composition in keeping with a standard to allow it to be called polytetraflouroethylene. There's even odds that a local source with lower cost and margins would source it from the exact same maker as McMaster-Carr and sell it significantly cheaper.