What sealer is being used for sealing new ring to cab and sleeper?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by 260REM, Jul 15, 2025.

  1. 260REM

    260REM Bobtail Member

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    Aug 9, 2023
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    Im aboot to put a big hole kit in my 1990 Peterbilt, for those with experience what is best sealant to use for sealing new ring to cab and sleeper? Also, do hucks need sealant on them such as under the heads?
    Thanks,
    Dan
     
    Last edited: Jul 15, 2025
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  3. Ridgeline

    Ridgeline Road Train Member

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    New gasket, don’t try to reuse the old one, they will leak.
     
  4. D.Tibbitt

    D.Tibbitt Road Train Member

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    Theres a feller on utube name twinstix that did a bighole conversion on his 359
     
    260REM Thanks this.
  5. 260REM

    260REM Bobtail Member

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    Aug 9, 2023
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    Thanks, I'll check him out.
     
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