Star-Lord
Well-Known Member
What is that tiny yellow metal O ring called for sea strainer (directly behind main engine water seaccock). Photo would not upload.
Sea strainer metal yellow O ring name?
- Thread starter Star-Lord
- Start date
vyv_cox
Well-Known Member
Sorry, photo is so out of focus I cannot even see what you are talking about.
Star-Lord
Well-Known Member
When you unscrew lid (to check strainer is not clogged) there is a big rubber seal… the bronze screw you unscrew always had this very insubstantial tiny yellow metal washer… this broke in half the other day - and so I need a new one I think… it seems water may be leaking from the strainer… where this washer was (a tiny rubber washer just squashes and breaks up when I tried using it). Maybe the washer is not necessary…
Star-Lord
Well-Known Member
Still… I would like to buy some new ones but not sure what they are called! I will have to use SVB.
sarabande
Well-Known Member
Do you mean the washer under the 'butterfly' nut which secures the lid ?
vyv_cox
Well-Known Member
I assume from the colour that it is brass.
VicS
Well-Known Member
Would silicon bronze be better.? Arthur Beale say brass is next to useless at sea !
Silicon Bronze Washers
Star-Lord
Well-Known Member
Yes, underneath the butterfly nut! I had a brain freeze when I wrote original question lol. It is a tiny little washer - very insubstantial looking.
Star-Lord
Well-Known Member
That is good to know! I thought it may be bronze.
Star-Lord
Well-Known Member
Many thanks for this info… the previous washer was metal but looked like it had a yellow coating… I think the smallest washer there would be too big but will measure butterfly nut to make sure.
vyv_cox
Well-Known Member
In a non-critical role like that I don't think composition is very important. Brass washers are usually 70/30, so not very susceptible to dezincification but as VicS points out silicon bronze or even copper would be as good
VicS
Well-Known Member
Presumably that must be a water tight joint.
Would a soft copper washer be better
or a Dowty washer
or should there be an O ring in a recess plus the brass or bronze washer .........??
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Star-Lord
Well-Known Member
The last washer was not Dowty. Those silicone bronze look good. Not sure if it was ever water tight (in my ownership
- a bit of seepage seems normal but water tight would be nice. I found a washer that seemed to have the same corrosive colour as the main housing so gave that a try. Found a small fish in the strainer today!