G'day Norm and CM,
The angle of the Viton Tip is exactly 70°.
Ok thanks CM, good to know the exact angle.
The only problem I see Norm is if the angle cut on the seat isn't 70 degrees then the needle will have less contact.
I had a small 3 mm shaft rotary white stone that I would shape the angle of the stone with a bench grinding wheel dresser
tool and that worked well to countersink any angle I liked.
The one I had was from an industrial supply shop and was a few dollars.
Cheers
Max.
