I'm zinc therefore I'm can

[stevewilliams]

Any ideas on how to seal a zinc tank - 30cm cube (a garden planter which I'm converting to a water feature) which has a 12mm hole in the bottom. I have tried a rubber bung and plenty of bathroom sealant as a washer but I think because the tank is thin walled and flexible the seal is easily broken.

Currently I'm experimenting with a piece of butyl rubber stuck over the hole with a flexible sealant but not sure if it will work but I'm hoping the weight of the water will keep this patch in place. Is there a recommended glue/mastic for bonding rubber to metal?

Any other ideas really appreciated.

Steve

 

[Diyisfun]

Thats the type of thing I would try & you can do it on both sides.

 

[gcol]

http://www.screwfix.com/app/sfd/cat/pro.jsp?cId=A336104&ts=13822&id=38770
Stick a rubber patch over it with this stuff.

 

[libby lou lou]

nut and bolt, large washer either side of the hole, underneath the washers you would put pieces of rubber, done this at the top of a car rad, still working.

 

[Trazor]

nut and bolt, large washer either side of the hole, underneath the washers you would put pieces of rubber, done this at the top of a car rad, still working.

For the rubber use a couple of tap washers, few pence each.

 

[breezer]

i would suggest a combination of all above.

rubber washers, bolt and genuine silicone on inside.

get the biggest washers you can, too small it may pull through corroding area