Petrol proof adhesive

Hi AJW,

Not too sure if this will help but emergency repairs to MAZAK carburettor parts could be made with insulating tape and chewing gum. Yes chewing gum. From my days in HM Forces etc. I am sure that in Edgar Westbury's days he did not have access to all the sophisticated technology we have now.

However there is a two part epoxy putty used a lot in modelling called MILLIPUT (www.milliput.com) made in Mid Wales. This was originally for plumbing repairs under water however I note from their website a few moments ago that it also can be used for (and I quote) "temporary repairs to car fuel tanks"

regards

Ian

There used to be a product calledd "Petropatch" for car petrol tank repairs... May be suitable if still available marketed by Grenville iirc..

I've stuck several similar model fuel tank covers with JBWeld Original (red & black tubes) and have not seen any signs of it degrading.

Edited By JasonB on 08/09/2018 19:54:46

Araldite chemical metal would be better than standard Araldite epoxy, Devcon do a good range and as Jason suggests, JBWeld is very good and fuel proof.

Dont know if it is true but I was once told that the rapid set adhesives are not fuel proof but the slower set time types are.

Ron

Edited By Ron Laden on 08/09/2018 20:47:04

Edited By Ron Laden on 08/09/2018 20:49:05

Edited By Ron Laden on 08/09/2018 21:01:21

Most epoxies cannot be relied on for long term 100% resistance against petrol based fuels with the exception of those which are specially formulated for the construction of composite fuel tanks and they tend to be more expensive than standard lay-up epoxies, MAS is one such resin available from www.ecfibreglasssupplies, though I doubt that you would want the stock quantity. A better alternative for such a small task would be to use an aviation standard fuel sealant PR 1440 which is a virtually indestructible synthetic rubber compound and will resist attack from all forms of gasoline and its additives, it can be obtained from Light Aero Spares or other aviation suppliers, maybe you might know an aircraft maintainer who could get you a small amount.

Trevor.

That's why I said the "Original" JBWeld as the faster cure ones don't have all of it's properties and I have heard the same said of Araldite.

Few of its properties listed here including petrol Proof

Edited By JasonB on 08/09/2018 20:53:27

AJW did you not read the link in my previous post where it says "When fully cured, J-B Weld is completely resistant to water, gasoline, and about every other petroleum product or automotive chemical"

Edited By JasonB on 09/09/2018 06:58:48

+1

I once used JBWeld original to repair a hole in a motorcycle fuel tank where the adhesive was in direct contact with the petrol (hole was in the bottom of tank) and it was a permanent fix, never a problem.

JB Weld (not the quick one) is advertised as 100% resistant to petrol once fully cured.

Sounds as if you are not convinced Alan, despite Jason having sent you the JBWelds spec sheet....?

I dont know if its mentioned on a new pack or not but it made me think of one or two items I have used over the years which I always associate with a particular job. You then eventually read the spec sheet and learn that it can be used for much more.

Ron

A sometime member here and contributor to ME and MEW has the soft jaws of his chuck stuck on with JBWeld, does not come into contact with petrol but shows that it is sticky stuff. He also tried some pipe joints as you would find on a model stationary engine upto about 300psi which is when his test pump would not go any higher.