Just use baby powder. It is just Talc powder with fragrance.

I've used that on the rubber seals to my dry suit for the last... OMG 11
years!

The seals are still in great shape. Last year I had to reglue them to the
nylon drysuit, but otherwise still water tight!

Talc is great on rubber.

"John Sindell" wrote in message
...
In rec.sport.waterski JT wrote:
Why?

I thought petroleum products caused rubber to break down - or is that
just latex (as in 'rubbers')?