348 - 348 air con pipe seals - sizes & dimensions? | FerrariChat
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348 348 air con pipe seals - sizes & dimensions?

Discussion in '348/355' started by agnello11, Jul 13, 2025.

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  1. agnello11

    agnello11 Karting

    May 27, 2008
    81
    #1 agnello11, Jul 13, 2025
    I'm finally determined to resolve my non-working air con :)
    My condenser was pin holed, so a new one has been sourced and I'm working my through the whole system. Got all the trims and undertrays off and have access to all the pipes and joints. I'm planning to replace all the seals with HNBR o-rings and convert to R134 gas.
    Does anyone have the specs / sizes for the seals at the pipe joints? or done this job and have any tips / advice they can share?
     
  2. fatbillybob

    fatbillybob Two Time F1 World Champ
    Consultant Owner

    Aug 10, 2002
    28,980
    socal
    #2 fatbillybob, Jul 13, 2025
    Most of us who do this have a box of various sized o-rings and just match to fit. For 134 you need to convert the compressor oil out for compatibility and convert the nipples to 134 size so people don't think to put r12 in there. ...obvious things new receiver dryer and hold a vacuum for a good few hours at least before putting any gas in there.
     
    Mike Morrissey likes this.

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