HW/Weihrauch Notex piston seals - any thoughts?

[Brosos]

Has anyone tried the Notex piston seals (made in Germany)? Thinking of trying them out on an HW90 as I'm having trouble locating a replacement Vortek. Apparently they're CNC machined (not injection moulded) and
of course molly infused.

 

[KWK]

But what are the CAS cup seals like? The purple seals

 

[A.G.R]

But what are the CAS cup seals like? The purple seals

Not tried Them..