Trying to replace thermostat, cant find replacement rubber seal

Discussion in '6.9L IH & 7.3L IDI Diesels' started by AZ94IDI, Sep 13, 2017.

  1. AZ94IDI

    AZ94IDI Registered User

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    So I got everything all apart and the old thermostat had a rubber flange seal thing around the metal lip of the thermostat. I ordered a replacement ford thermostat and it did not include said rubber seal. I have looked online and in Napa/Autozone and can't find the right seal/part number.Can I replace it without the rubber flange/seal/thing?

    If you would pictures of what I am talking about just let me know and I can post some up.

    Thanks
     
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  2. SPR1NK

    SPR1NK Full Access Member

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    i do not think the thermostats in these use that, it's just the thermostat and gasket i believe
     
  3. Hydro-idi

    Hydro-idi Full Access Member

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    The thermostat does not require a rubber seal around it. Never heard of that for these engines. I always put a little dab of rtv on edges to help it stay in place
     
  4. shawn deere

    shawn deere So many wrenches, so little time...

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    I made mine out of gasket material
     
  5. Clb

    Clb Another old truck Supporting Member

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    Bet its a China statt...
    My oem ford unit went in fine in 2 rigs right outta the box\bag.
     
  6. Macrobb

    Macrobb Full Access Member

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    Yup, removed the rubber ring on mine. No need for it.
     
  7. icanfixall

    icanfixall Official GMM hand model

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    Never heard of the rubber ring not being vulcanized to the stat body. I usually cut mine away for better flow. The "idea" is this flex seal will close off the stat so no leak by happens. As the thermostat opens this "seal" stays against the body and restricts flow. Never did learn why they were made that way but.. Best check where your stat was made. We had a few china stats fail and they broke those three legs that holds them as one piece. Not good at all.
     
  8. pelky350

    pelky350 Full Access Member

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    I took the rubber off mine, old one didn't have it new one wasn't going to have it lol
     

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