Glycerin was/is used as an ingredient in some hydraulic fluids including automotive brake cylinders. It used to be used to lubricate the rubber parts and seals in these brake components during assembly.
Chas. Colerich Oakland, CA USA
oroboyz@aol.com wrote:
> Hi gang:
>
> In the interest of preserving or rejuvenating vintage bicycle rubber, I asked a friend, who operates a BioDiesel fuel manufacturing company, if they are in fact a source of glycerin and what he thought about its use in this context...
> Sounds like a "Yes" and "Maybe not..." Read below:
>
> Dale Brown
> Greensboro, North Carolina USA
> -----Original Message-----
> From: John Hepburn
> Sent: Thu, Jun 24, 2010 10:19 am
> Subject: Re: [CR] Glycerin sources
>
> We have moved several thousand gallons of crude glycerin. I am working on selling more as I write this.
> Glycerin is a by-product of Biodiesel manufacturing. Because the Waste Vegetable Oil (WVO) we use is inconsistent, the glycerin is variable. We have made some soap from it in test batches. It is a reasonably good cleaner in the crude form, but as a rubber preservative...?.