Which Loctite for an Anchor shackle?

[J Neeves]

The problem with the Loctite websites is that they have no marine focus. They have a myriad of products but there is no recommendation for marine use. Any of us who use Loctite, anywhere, can attest that its pretty good - but which is the best for marine usage? Consequently the only application information appears to be 'us'.

I have just 'undone' some shackles moused with 609 I used a 20cm adjustable with considerable force. I thought I had 13 shackles, my arithmetic was wrong - its 18, and I may try something a bit less robust.

But why I'm using 609, no idea - and its far from obsolete

http://www.henkelna.com/adhesives/product-search-1554.htm?nodeid=8797928194049

though why is does not appear in the UK website - that's anyone's guess.

It might well be there are a larger number of applicable products but a product suitable to 'simply' seize an unstressed bolt might need something different to an anchor shackle.

Jonathan

 

[vyv_cox]

Jonathan's post highlights the reason I carried out my trials on 242, which seemed like the most appropriate to select. At the time there were several threads on PbO suggesting that it would deteriorate if left immersed for some time. I could not detect any change, although that was for anchoring rather than permanent immerion on a mooring.

 

[J Neeves]

To add to Vyv's post - My 609 was applied, pins screwed home hand tight, and then immersed, basically continuously, for 30 days. The shackles are not under heavy load, a few kgs - I'm just looking at galvanising and in now way testing the 609! I'm actually testing with 12kg loads now - but that is nothing compared to the load on an anchor shackle. But I am impressed that I've dropped the shackles within an hour of tightening (I have the 18 to do) but they seem to set sufficiently toughly, or tightly, to require considerable effort to break them out.

Frankly I really do not see the need for mousing wire, a little squeezy bottle is much handier - kinder on the hands if you need to grab the shank and will not suffer from seabed abrasion. And a little squeezy bottle seems to last for ever. if you had doubts - you could just put a 200mm spanner on your shackle pin and test its tightness every once in a while, every time you anchor - or whatever.

If you use an allen keyed recessed shackle pin - I'm not sure you have too much choice anyway other than peening or adhesive.

But what's best (for an anchor shackle), I, for one, do not know

I'm not sure how to test in real life - except take note of Vyv's hard won experience Which is what I'll follow when I need to replenish my 609 - unless Vyv updates the testing

Jonathan