Need a Gasoline-Proof sealant for Polyethylene
Need a Gasoline-Proof sealant for Polyethylene
(OP)
I'm a Mechanical Engineer designing light hovercraft. We are using Polyethylene fuel tanks and have a hard time finding anything that sticks to Polyethylene very well.
We have been experiencing leaks around our fuel sending units and need a sealant that can stand up to constant contact of gasoline/oil and fumes (2-stroke). Most "fuel resistant" sealers just turn to mush or fall apart after a few days. And if they do hold up against the fuel/oil they often lose adhesion with the Polyethylene.
Any recommendations?
Thanks,
CS
We have been experiencing leaks around our fuel sending units and need a sealant that can stand up to constant contact of gasoline/oil and fumes (2-stroke). Most "fuel resistant" sealers just turn to mush or fall apart after a few days. And if they do hold up against the fuel/oil they often lose adhesion with the Polyethylene.
Any recommendations?
Thanks,
CS





RE: Need a Gasoline-Proof sealant for Polyethylene
RE: Need a Gasoline-Proof sealant for Polyethylene
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If we learn from our mistakes I'm getting a great education!
RE: Need a Gasoline-Proof sealant for Polyethylene
2. Use a mechanical joint with a seal, e.g. an o-ring.
Spend a day in a junkyard. Look for plastic fuel tanks. Examine how they're mounted and how the connections are made.
Mike Halloran
Pembroke Pines, FL, USA
RE: Need a Gasoline-Proof sealant for Polyethylene
There are very few adhesives or sealants that stick to polyethylene.
If you can tolerate a "permenant" attachment, look at 3M DP-8500, although I'm not sure about its resistance to gas and oil.
If you need a removable-repairable attachment I doubt that you'll find anything suitable.
RE: Need a Gasoline-Proof sealant for Polyethylene
If you have to go the way of using a sealant you might want to give Reltek a call for a specific recommendation
http:/
RE: Need a Gasoline-Proof sealant for Polyethylene