900 thermostat O ring gasket

jpliddy · Oct 20th, 2018, 15:19

hi all i have just purchased a thermostat and O ring gasket for my 940 tdi i can't get the O ring gasket to fit into the engine block im told i have the wrong O ring the one from volvo dealers is different than the old one i took off the new O ring is square shaped with a small groove in the middle which does fit nicely round the outer edge of the thermostat . the old O ring sat on the outside face of the thermostat the stat is nearly the same size as the hole in the engine block so when O ring is fitted to outside edge it will not fit .
can any of you guys with the petrol engine tell me if you have a O ring that fits round the outside edge with the small groove . this will tell me for sure i have the wrong O ring . i have put the old O ring back and applied a small amount of HYLOMAR sealant this has stopped the leak i had for now
all comments most welcome .

Oct 20th, 2018, 15:19	#1
jpliddy VOC Member Last Online: Feb 15th, 2024 17:04 Join Date: Dec 2006 Location: stoke on trent	900 thermostat O ring gasket hi all i have just purchased a thermostat and O ring gasket for my 940 tdi i can't get the O ring gasket to fit into the engine block im told i have the wrong O ring the one from volvo dealers is different than the old one i took off the new O ring is square shaped with a small groove in the middle which does fit nicely round the outer edge of the thermostat . the old O ring sat on the outside face of the thermostat the stat is nearly the same size as the hole in the engine block so when O ring is fitted to outside edge it will not fit . can any of you guys with the petrol engine tell me if you have a O ring that fits round the outside edge with the small groove . this will tell me for sure i have the wrong O ring . i have put the old O ring back and applied a small amount of HYLOMAR sealant this has stopped the leak i had for now all comments most welcome .

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