PEEK-(Poly Ether Ether Ketone) is what Venom Arms used to make their piston heads I believe. Never was anything wrong with those if memory serves me right. Aint cheap though.
You want it fixed when??!
lol...im not bad off but it would only be for my own single rifle or pistol ....and not for club member tunes.
Just special for me.
TBH its all about how a material machines. A material can have wonderful properties of everything but if it wants to rag or finish poorly, then all those properties are meaningless.
Its why Acetal/ Delrin takes some beating...
Recently i discovered a number of members complaining of Stainless galling.
You would imagine so much tougher than Delrin but galls for fun.
Hardened silver steel makes great guides and does not gall but Delrin wears well, removes all vibration and is quieter.
It releases all the spring energy and can be made a tighter fit.
Peek interests me though.
peek is very hard and also quite brittle, I don't know how it will stand up to repeated impacts on a piston.
bb
We have seen PEEK used as supposedly "silent" hammer tips in PCP's. All the ones I've seen have been in good condition (not cracked or distorted) but they are no quieter than a standard steel hammer tip in my opinion. I have a feeling that many people buy them or make them to try and then convince themselves they are quieter than the steel original. As yet I've not been persuaded to make or buy one.
PEEK has many other uses that I would gladly use it for given its properties it is superior to other plastics in some circumstances.
BSA Super10 addict, other BSA's inc GoldstarSE, Original (Diana) Mod75's, Diana Mod5, HW80's, SAM 11K... All sorted!
It actually isnt....but i wasnt planning using it as a piston seal, that job is done very nicely by Urethane parachute seals and such.
I meant the guide ....for that it is beyond words good.
The stuff is damn near perfect .. super slippy, resistant to chemicals and stable at broad temperature range...
None flexing....strong and nice to machine...good stuff
If I were to contemplate replacing a pump head on a Crosman 1377 (the original seal is worn anyway) with a pump head made of Delrin would the 100 grade be a good starting point? Machined up for a single or perhaps double o ring to B.S. 111. Bucket of water standing by just in case I get shot down in flames.