Air-bags(what type of glue)

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oldblue
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Air-bags(what type of glue)

Post by oldblue »

Trying to fix an air leak in my Coil-Rite air bag.
It's leaking between the brass push lock fitting and the rubber bag.
Anyone know of a good glue to use that would seal the two items togeather. Brass to Rubber.
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IcedJohnno
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Post by IcedJohnno »

One possiblity might be SikaFlex 221. Note this is SiKa not silaflex.
It is a Lurethane sealer/adhesive that is very durable.
Tis used as the door hinge on some tractor cabs. The edge of the glass is bonded straight to the frame and the hinge is the amount of flex in the adhesive. I think the adhesive qualities otf this product should stand reasonable pressures.

If the bags are made of Polypropylene or Polyethylene, any sealer or adhesive used requires a primer to get the stuff to stick. The primer that I got from Sika in Chch smelt like the more common plumbers plastic pipe glue that sniffers use.

When I used this on my snorkel it stayed adhered even after the roll-over. When the panel beaters replaced the snorkel the typical RTV silicone adhesive that they used unstuck within two weeks.
Hope this helps
John
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Steve_t647
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Post by Steve_t647 »

that is harder than you think whatever you do you need to go to a soft glue (rubberised) because of the vibration cracking anything harder and the leak comes back.

A friend of mine with a bagged hilux (why lower I will never know) used shoe sole repair glue to fix his air leak. :lol:

the other thing he did was run the hose vertically to the bagand have a bracket holding the hose (no movement between the bag and hose until after the bracket.

Funny they always seem to leak at this point not sure why someone hasn't introduced a better way. :?

Good luck. I think the key is to make sure it is fully dry before testing.
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oldblue
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Post by oldblue »

Thanks for the quick replys
On close inspection it appears that the bags when inflated can go up to the floor thro the top of the tower, which caused the hard nylon tube to distort the brass fitting and become stressed where it entered the bag.
If I can fixs the leak ,I'll see if they can be fitted with the tube coming in from below.[img]Front-Springs-70s-Prado/Prado_rear_towers_001.thumb.jpg[/img]
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oldblue
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Location: Nelson, New Zealand.

Post by oldblue »

Up date! Used HOLDFAST, CARBOND 940 glue ,drys to a flexable state.
Used in Auto Motor Body Building, seems to have done the job OK.
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