rubber sealing strip for underwater use

[Birdseye]

my current boat, like my last one, has lead keels bolted to a grp stub keel and with a rubber strip covering the join. The rubber is maybe 40mm wide and 3 mm thick. It does look as if it is a self adhesive strip because the edges are cut and parallel.

anybody know what type of rubber it is - doesnt look like silicone, more like real rubber. More to the point, where can I buy the strip?

 

[KevinV]

Heavy duty pond liner? Not self adhesive, but about the right thickness

 

[penfold]

What is it achieving? I've never seen a hull-keel joint with rubber tape over it. Is it rebated?

 

[Boater Sam]

Seals Direct sealsdirect.co.uk

 

[cpedw]

There's a rubber strip that's used to repair wet suits. Try a divers' shop.

 

[Boater Sam]

There's a rubber strip that's used to repair wet suits. Try a divers' shop.

That will be neoprene rubber. There may be better compositions for this application.

 

[Birdseye]

What is it achieving? I've never seen a hull-keel joint with rubber tape over it. Is it rebated?

there are bolts running through the grp keel stub into the lead keel, so there is a joint between the two that is under water 24/7. There need to be a flexible seal

 

[Tranona]

No different from any other keel and the seal is normally a mastic of some sort, typically one that cures and is an adhesive. Around the joint this may look like a separate seal. I could be wrong, but like others I have never seen such an arrangement. This seems specific to your Sadler and it might be worth asking mike Lucas Yachting about how the keels were attached or Stephen Jones who designed it uk.linkedin.com/in/stephen-jones-6461a035