Hypalon vs Neoprene
Hypalon vs Neoprene
(OP)
I have a cooling water connection on a diesel engine with a Neoprene jacket. The jacket is getting hard and cracking after about 5 years in service. I was thinking about switching to Hypalon. Is it likely that I will get a longer service life from Hypalon? My goal is 10 years. The joints are supposed to conform to ASTM F 1123 which rules out EPDM for the jacket.





RE: Hypalon vs Neoprene
Yes there are materials that will last longer, but why not keep it simple and just replace it as part of regular maint?
If you call out something special it may never get replaced.
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P.E. Metallurgy, Plymouth Tube
RE: Hypalon vs Neoprene
The reason I want better longevity is because they are very expensive and I have many of them in my fleet. We're overhauling the engines once every 5 years. Replacing the expansion joints is 10% of the midlife overhaul cost of the engines, including labor!
RE: Hypalon vs Neoprene
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RE: Hypalon vs Neoprene
The resins may be different, and fillers and catalysts definitely are.
Often longer life with high temp water means reduced mechanical properties (especially less 'rubbery').
You may need to be looking for a part that is multi-layered, with different compounds inside and outside.
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P.E. Metallurgy, Plymouth Tube
RE: Hypalon vs Neoprene
RE: Hypalon vs Neoprene
RE: Hypalon vs Neoprene
... for the same car.
In ignition service, it's crap.
Mike Halloran
Pembroke Pines, FL, USA
RE: Hypalon vs Neoprene