Anyone know anything about 'O' rings?

[glynherron]

Hey guys, its been a long time........................

Well its been too long since the yellow peril was on the road, so now's the time.

Got various issues to sort like replacing both oil coolers (non genuine available??), full service, belts, exhaust manifold (oh dear or is that dear!), engine mounts, drivers door mirror, and then replacing ABS for the Kelsey Hayes system!

But for now I have a petrol smell. Checked pipes, recon OS tank. They say the 'O' ring is leaking where the electrical connections pass into the fuel pump.

So, what sort of 'O' ring do I need? What is compatible with fuel vapour? Where to buy from?

I guess I could buy a complete fuel pump assembly, but this seems like an expensive solution

Any solutions to any of problems are welcome

Looking forward to hearing her ROAR again!

Cheers

Glyn

[Vulcan Grey]

Viton would work.

Are you sure it isn't just the o-ring that seals the pump into the tank, or the filler hoses, or the many other connections?

[andydclements]

I'm with Travis there.

I'd say they mean the large (circa 2 1/2 inch diameter) ring that seals betweent eh plate the pump is secured to and the ring of the tank.

[s4simon]

Or Nitrile O Rings.

Nitrile rubber is designed for fuel / oil immersion without breaking down.

Here's a webpage I made years ago which has all the tech specs on different rubber types.

Rubber Tech Specs

[Advantage]

Clutching at straws? Is it not just a plain and simple case of rust?

[glynherron]

Thanks Guys

When the tank was put under 5psi pressure during reconditioning, they noticed the leak. It was / is definitely the 'o' ring described, being about 10mm in diameter. They wiggled it and you could hear the air escaping past it.

When I removed the washer (like a fish gill arrangement where once its on its on, if you know what I mean) from the underside of the fitting, it damaged the plastic, so it looks like I will need to find an alternative solution of sealing the wire entry point.

So nitrile is the way forward then!

Better get the RS or farnell book out

Cheers

Glyn

ps on a side note, why has my post count gone to 3, when it must have been in the hundreds....... it was along time ago when I last posted though

[mdw]

So nitrile is the way forward then!

If its just a flat seal you need you can buy nitrile sheets on ebay and cut/ punch your own.

[Bibs]

ps on a side note, why has my post count gone to 3, when it must have been in the hundreds....... it was along time ago when I last posted though

You've got 2 accounts Glyn, 1 with 3 posts and 1 with 334...

[glynherron]

Hey Bibs

Thanks, but how did I achieve that?

Was is signing in under my facebook login?

If so, is it possible to merge the 2 and delete the FB one?

Sorry to cause you hassle

I looked for your phone number to call, but you've gone

Cheers

[Bibs]

Fixed! My mobile number's not changed in 20 years mate... I can almost remember it myself!

[glynherron]

Just thinking of all the cars which smell of petrol with cause unknown.......

I wonder how many others are like mine, as you can't easily see or check it...........