Silicone spray on rubber parts

[JHZR2]

Hello,

I have subframe bushings that are fairly old and creak a bit. They just need a bit of lube to make them quiet after 19 years of use.

I have Amsoil silicone spray (ALS). My concern is that I understand that silicone sprays with petroleum in them can be bad for rubber parts.

www.amsoil.com/msds/als.pdf

The MSDS shows 5% silicone, and the balance all solvent and hydrocarbons. I'd imagine that a good portion of these things are actually propellant, not solvent for the silicone, but need I be worried about this content for lubing? Any suggestions for a good rubber lube that can be sprayed without concern?

Thanks!

 

[qship1996]

At 19 years of use and exposure to ozone, road salt and oils, it is time to replace them with new bushings!

 

[Scott_Tucker]

Or spray them with your silicone spray and if they fall apart it was time to replace them anyway!

However, I doubt it will hurt them.

 

[chrome]

If you get silicone spray that is "Food Industry Approved", then it probably won't contain petroleum components.

 

[danster]

That's what I was going to say! "food grade"

 

[mechanicx]

I know PAM is a food grade spray oil lol. Seriously the OP aasks a good question and I don't know the answer other than the spray silicones say they are for rubber. I've used them on rubber bushing but I don't really know if they helped or hurt.

 

[eljefino]

Mobil 1 is approved for machinery incidental to food (whatever they call that-- it can drip on the assembly line.) And mineral oil laxative is, well, oil.

You can get silicone shine from an, uh, adult bookstore

that's supposed to be okay.

 

[mechtech2]

Spray away!
Count on re applications - no big deal.
All new bushings are a PITA, but you have to consider that job for the future.

 

[bcossa2001]

I agree with MechTech. Silicone spray on my 97 Avalon struts silenced rattles that I could never find....

Interesting about the Pam....my Haynes manual mentions lubricating certain bushings with vegetable oil.

 

[daman]

Anything with petroleum distillates is bad for rubber,avoid it.

 

[mechtech2]

His 20 year old bushings are already bad!

 

[daman]

Ahhh little silicon spray and shes good for another 20.