You will never know exactly IMO, it likely is rather proprietary and guarded..

Glass filled is however very likely.
I would be surprised if today its nylon 6/6, which is a great material, but would be leery if it has sufficient temp durability for today's applications.

Want to share the reason for question?


Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.