Precision Gasket and 67 Mylar strip

So I see quite a few suppliers with kits for front ws but nothing for the rear?? Im talking about the lockstrip for the windshield.
Apparently mfg is by the name of Precision unless anyone knows any other mfg??
Who has contact info for them?
Steele sells it at 3.90/ft.
They guy from Steele even said they sell it but dont mfg it.

Thanks
Steve