What is the proper name...?

I have two left hands and ten thumbs. After racking my brain I can only suggest s i l i c o n e.

linseed putty certainly works

I presume you cant just run it through the washing machine

NT

Instead could you use some sort of self-adhesive foam rubber strip/tape? Google finds lots of varying thickness ...

linseed putty certainly works

I presume you cant just run it through the washing machine

I doubt it. It's a bit like putty but not oily. The original strip is about

mark

Plumber's putty?

Sit it on a bead of silicone. If you want to be particularly anal, then paint (oil based) or varnish the cut edges of the chipboard to prevent water damage should it ever get passed the seal.

You can buy a replacement sealing strip along with sink clips from B&Q for £6

...

I wasn't impressed with the sealing strip that came with my sink and used silicone bath sealing mastic instead. It is still working about 15 years later.

Colin Bignell

We were somewhere around Barstow, on the edge of the desert, when the drugs began to take hold. I remember "mark" saying something like:

The same type of strip is used to seal between overlapping steel roofing sheets and you might find it at a roofing bits stockholders - I'm thinking of corrugated panel suppliers.

It is the same sort of thing that is used on steel roofs to seal the overlays. It is just non hardening putty gunned out to a strip on paper for ease of use. All you need is mastic of any sort to stop vibration as much as water gasket.

The other thing you need to do is seal the cut edges with paint or more mastic.

Tape sealant used in glazing ought to do. Wider than the roofing stuff though. Butyl.... something:-)

regards