I recently picked up a couple of more expensive casting rods for my finesse / bottom contact lures and normally add some U-40 cork seal to my rods, but I'm wondering if adding the U-40 to these would dampen my experience with them. What do you think?

What you get on forums are opinions, often biased, often based on misinterpretation of the question, often axes being ground. In time you can gain confidence in some people's opinions. But not all the people. In this case, it is my opinion that DVT has it about right. If one doesn't like the feel of cork after using U-40, then a light sanding takes it off. Give it a try and see for yourself. Does cork not get slippery when wet? I don't think it does, at least not much. It certainly does with fish slime on it. Sealed or not sealed. I believe that U40 doesn't significantly affect the feel or friction or gription, and it might keep some of that inevitable filler from coming loose. My grips don't have filler in them since I use exotic burl cork, which has no voids and has no fillers. They feel just fine whether left alone, sealed, or even with wrap epoxy or some kind of polyurethane on them. In my opinion. The major influencers of the grip staying in your hand are shape and size (ergonomics). Give U40 sealer a try. Have your own opinion. Then you can post it and sound like an expert.

Is It Worth Putting U-40 Cork Seal On Expensive Rods?

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1. For those of you that use U-40 do you use it on your most expensive rods?
- Yes you should seal the cork on all your rods
  
  61%
  
  13
- No it's already premium cork and the rod won't feel as good if you seal it
  
  38%
  
  8

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Poll closed on 01/01/2026 at 08:20 PM

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January 1Jan 1

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Thanks to all that replied. Looks like 38% said don't do it and 62% said they use it on all their rods. I think I'm going to remain in the middle for now and have it on almost all of my setups but still haven't applied any to the more expensive rods that I ended up getting towards the end of last year. I might change my mind at some point but for now I'm happy to remain somewhere in the middle on this one. On another note as Tom pointed out you can also use a magic eraser to clean up your cork every once in a while and can confirm that works too.

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1 month later...

February 18Feb 18

Seal it. It penetrates. Lightly sand it and it feels like it did before you sealed it but it maintains all the benefits of sealed cork.

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Is It Worth Putting U-40 Cork Seal On Expensive Rods?

Is It Worth Putting U-40 Cork Seal On Expensive Rods? 23 members have voted

1. For those of you that use U-40 do you use it on your most expensive rods?

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