Chainsaw duckbill valve

[nickb2]

I am dealing with elastomers as we speak, something to do with my water cooled pc.

My limited understanding of this phenomenon is the leeching of poylmers or other syn such as. Because this thread is very useful. I am sorry one of my links did no provide desired ID or OD. But I am sure we, as a unit can find what you need.

It took me a while to gather what you want to accomplish. A photo of the "big" pump/s would sure go along way! Hint.

 

[nickb2]

So the degradation I think you are referring to is something along those lines. Viton, from my understanding has been replaced by a newer grade polymer. Again, not an engineer here. Just a curious guy.


Using viton based seal is great for tuff chems. The 50 50 mix you spoke of, I cannot help give adequate info on that other than just personal experience.

Viton seal are widely used in ac systems. They don't degrade with the knew fluoro stuff.

 

[nickb2]

On a joke side, did stumble on this almost was tempted to do a joke. Darn, I think I am doing that right now.

https://www.martins-rubber.co.uk/blog/what-is-viton-our-essential-guide/

https://www.amazon.ca/NeneSupply-Duckbill-Breastpumps-Breastpump-Breastshields/dp/B00XVASFGC;):beer:

 

[billr]

Sticky, hard to flow. Something like carpenter's white-glue or honey.

 

[JackC]

JackC, I'm talking about Joseph's in PH; do you know of any other local places?

Sorry, I do not know of any. Plus I have NO gas equipment anymore. Just two gas cars. If I was younger I would replace those with electric.

 

[billr]

Another possibility is duckbills used on paint sprayers; I see the names Aro and Grayco listed. Does anybody have experience/info on paint equipment?