I forgot I posted this. I have since got these in my hands, and I put them on an FTIR machine to make a materials analysis. In my hands, I would have bet they were Polycarbonate, and I was correct. There might be something else blended in there, but the signature was 99% identical to some other material in our library.I want to preface this by saying that I’ve never seen one of these tips up close. But from the pictures they look like acrylic. I would expect it to be a high impact acrylic, like Implex.
If you miscue, I would expect heat deflection temperatures to potentially deform the plastic.
Freddie