anti slip for turntable belt


Have you tried a safe product  that can extend the life of a turntable belt, and help also the belt not to slip at departure of the platter ?
audiosens
Isn’t the OP looking for an anti-slip application for his belt?

 

IME, talc is used on TT belts to help create belt slippage in an attempt to create a friction clutch system until the platter is up to speed.


Talcum extends the belt’s life, OP was asking just that. It also prevents belt squeak and other noises. All turntable belts slip and will always slip. The motor is trying to move a very massive platter from rest. Of course it will slip. 
@invictus005 wrote
Talcum extends the belt’s life, OP was asking just that. It also prevents belt squeak and other noises. All turntable belts slip and will always slip. The motor is trying to move a very massive platter from rest. Of course it will slip. 
But that is not what the OP asked, he asked for a product that extends belt life and helps the belt "not to slip".  Re-read his post.  Talc will extend belt life but at the expense of increased slippage at start up.

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At the expense of a few micro-seconds slippage, I can live with cleaning and talc. This might be expected on initial treatment, but I expect it to settle over a short period.