Antifreeze leaking up by valve cover???

[newthings]

I replaced the thermostat and the new one leaked. Had to go in again. The O rings 122 and 138 are leakers. Replace the hoses if you are in this area.
Roy

[AssyrianMe]

I replaced the thermostat and the new one leaked. Had to go in again. The O rings 122 and 138 are leakers. Replace the hoses if you are in this area.
Roy

I bought a coolant o ring kit, Same size leaked a bit. Parts guy gave me two o rings. Leaks a lot. Now I have to do it again.

Where to buy the 122 and 138 o rings??
Thanks so much.

...and sliding those pipes with the o rings was so difficult. Did you use silicon spray or something else to lubricate those rings?