Valve (making of) Seal Material
Hi guys, I know Delrin can seal.
PTFE (teflon) can seal as well, as in, you can lathe it and turn it to the tophat.
What other plastics can seal? Is there a general rule or trend?
more specificaly, what about “Xlube”.
the reason is because there are so many shapes for diff plastics that can potentially be seals without having to turn a stock yourself…
Finally, What about an oring sealed valve??
Thanks
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you pretty much want the hardest plastic posable , with the least posablity of cracking . almost anything will work , but softer stuff will mesup easyer and has more flex which is not as good for hpa.
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+1 to Jezx’s reply. You want hard but tough plastic.
I was at my local plastic dealer and he showed me how to determine if it was Delrin or UHMW. He simply dropped the rod onto the concrete floor from about 6″ up, on end. The Delrin, being much harder, went “bink” where softer the UHMW went “thunk”.
UHMW and PTFE (Teflon) will cold flow, which is undesirable in a valve I’d bet. Glass filled nylon might be a good bet, but I’d wonder about the airtight sealing abilities.
What is “XLube”? Is it the self-lubricating Delrin? If so, I’d probably avoid it since you’re not too concerned about lubrication in a valve. It would make a great spring guide in a springer though.