Colle-Mastic Multipurpose Special Navy, 409331

This is a great product. Ultra sticky do you have to be careful when applying it, but it does a great job filling, sealing and sticking.

Problem. Modern close couple WC, syphon is glued in place, within cistern, but starts leaking, adhesive has broken down prematurely. Most silicone sealants are not suitable for full immersion, fish tank sealant not readily available locally.Solution. Marine sealant. Sikaflex products are very good, as I have used automotive sealants before.Its not expensive, by comparison to high performance silicone. It is hard to squeeze out with a gun, next time I'd probably warm it up a little. Once cured, job seems to be done. I have used it for a number of other of little leaky bits, here and there. Would imagine it would be put to a whole range of waterproofing and sealing tasks. so yes, a recommendation.

Great item

It does the job of an adhesive very well, however because of its consistency it does seem next to impossible to apply using the usual gun nozzle, it may help to warm the tube, the other downside is that there are no English instructions on the tube, but they can be found online, be careful to seal the tube if you want to use it again as it will set in the tube outlet, it is a very good product and I would recommend it.

Great for sealing many areas that require waterproofing in marine situations

Use it to stick a solar panel directly onto roof of motorhome. Fills gaps nicely and is super strong. I tested it on 2 small squares of 12mm perspex. Used a 3mm thick bead and let it cure for 24 hours. I cannot part the perspex pieces even with a chisel or bolster.

Good product

Sikaflex is brilliant, but photo shows nossels yet none supplied adding more expense and hassle to go and buy.