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HNBR O-rings for air con

Nic Williams
Nic Williams
in Ford Fiesta Club

Featured Replies

Me again 🙂

I want to replace the 2 O-rings joining the a/c compressor to its hoses. Ford charges a whopping £70 for 5! Daylight robbery! 

the original Ford Part number is 1445820. i know the material must be HNBR because that has a wide temp range from -40 to +175 C and is recommended for use with R134A refrigerants. I know the size is BS211 (3.53mm cross section x 20.22mm internal diameter). What don’t know is which Shore Hardness I need (70 or 90 seems to be commonly sold). *Which is same as Ford and does it matter?*
 

Note: ebay does a mixed box of HNBR O-rings for air con for a tenner but these are only very small O-rings. But they don’t quote the hardness. I can buy the correct size from specialists for about a tenner a pair but I need to select the correct Shore number. 
 

I know this is rather specialist knowledge but can anyone shed any light? 

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  • Quote
    • 2 weeks later...


    • Author

    In case anyone finds the thread in future here’s the info on which rubber seals I used and where to source.

    You can buy 6 direct from Eastern Seals for a few quid rather than £70 from Ford  I went with Shore Hardness 70.

    The old compressor seals had thinned significantly. These new ones fitted perfectly and a/c now running well and holding pressure.

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  • Quote
    • Like 2
    • Thanks 2
    • 5 months later...

    Hi, thanks Nic.

    I too have been looking for the 2 O rings for my AC compressor, certainly didn't want to buy 5 from Ford for ÂŁ70!

    I see some people on Ebay are selling the 2 Ford O rings for ÂŁ30-40!

    Just received my O rings from Eastern seals this morning via DPD, I ended up buying 10 O rings  as the minimum spend is £5.

    Still, the total bill was £11.40 with DPD delivery & VAT. Much better than £70! 

    Thanks again for posting on here! 

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