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Repaired Silicone Neck Seal

Discussion in 'Do It Yourself - DIY' started by swimlikethefish, Apr 23, 2018.

  1. swimlikethefish

    swimlikethefish Barracuda

    # of Dives: I just don't log dives
    Location: East Coast
    231
    100
    43
    As a favor I repaired a silicone neck seal for @Colliam7. Here is the how to:

    Step One: Tear your silicone seal. 20180423_184948.jpg

    Step Two: Use MEK to clean both sides of seal around tear. 20180423_191335.jpg

    Step Three: Apply 3M AC79 Primer to inside of seal around tear, try to get it in the tear as well without making the tear larger. 20180423_191343.jpg

    Step Four: Let primer dry for 15 seconds.

    Step Five: Apply 3M SF100 Adhesive. 20180423_191349.jpg

    Step Six: Apply the adhesive to the inside of the seal first. Doing your best to get it in the tear as well as around the outside. 20180423_185631.jpg

    Step Seven: Allow adhesive to dry 5 minutes.

    Step Eight: Repeat step three to outside of seal.

    Step Nine: Repeat step six to outside of seal. 20180423_190804.jpg

    Step Ten: Repeat step seven.

    Step Eleven: Verify both sides have dryed thoroughly.

    Step Twelve: Set seal in safe place, allow to set overnight. (This step is not necessary, at this point the seal is ready to dive, I just do it for extra assurance.)

    Step Thirteen: Reinstall seal in suit.

    Step Fourteen: Go Diving

    20180423_195906.jpg

    It might not look great to the naked eye, but it will keep the water out. I have yet to dive any repaired Silicone seal. So I am going to send this back to its owner and he will be our test pilot. (I am positive it will not leak) I hope to have a report back on its validity once it is received and the owner dives on it.
     
    Last edited: Apr 23, 2018
  2. Jack Hammer

    Jack Hammer Solo Diver

    1,476
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    Great write up, thanks. May I suggest, for thorough testing of course, to first dive it in waters around 38f/4c. That way there'll be no confusion as to how well it's holding up.
     
    Colliam7 likes this.
  3. swimlikethefish

    swimlikethefish Barracuda

    # of Dives: I just don't log dives
    Location: East Coast
    231
    100
    43
    That will be up to the owner. You can take your test criteria up with him.
     
  4. Colliam7

    Colliam7 Tech Instructor Staff Member

    # of Dives: 1,000 - 2,499
    Location: Hillsborough, NC and Kents Store, VA
    5,295
    2,316
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    Well, I won't immediately be able to dive in 38 degree water. But, I will dive it in 48 degree water and report back.
     
  5. Compressor

    Compressor ScubaBoard Supporter ScubaBoard Supporter

    # of Dives: 1,000 - 2,499
    Location: NY
    1,824
    530
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    Very nice write up.
     
  6. Colliam7

    Colliam7 Tech Instructor Staff Member

    # of Dives: 1,000 - 2,499
    Location: Hillsborough, NC and Kents Store, VA
    5,295
    2,316
    113
    Ah, I am the SB test pilot for this? And, the official repair station is 'positive it will not leak', eh? :) Seriously, I very much appreciate the fix, and am glad to be the TP.
    I will definitely report back.

    Looking forward to trying it.
     
  7. divad

    divad Solo Diver

    6,883
    1,420
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    "They" said it couldn't be done......
     
    swimlikethefish likes this.
  8. grf88

    grf88 Divemaster

    # of Dives: 500 - 999
    Location: Markham, Ontario
    1,220
    637
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    I don't recommend that. I had a similar tear in my neckseal while diving in 34F water in Labrador last fall and although I knew I was very cold I did not realise I was in the first stages of hypothermia until I got out of the water. Thought I was going to shake all my filling loose.
     
  9. Colliam7

    Colliam7 Tech Instructor Staff Member

    # of Dives: 1,000 - 2,499
    Location: Hillsborough, NC and Kents Store, VA
    5,295
    2,316
    113
    I gotcha! Be assured that I will try it in our local quarry, and I am very sensitive to leaking, given where the tear was neck, front. In fact, I felt the results of the tear on a dive there some weeks ago, when the entire front of my undergarment flooded as soon as I submerged. So, I will be in a position to immediately surface, doff the suit and put on dry clothes.
     
  10. АлександрД

    АлександрД Barracuda

    # of Dives: 100 - 199
    Location: Moscow, Russia
    358
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