Seal between block and waterpump

[85AW20v]

Anyone know what size that pesky fricken blurry seal should be? And if the o-ring is made out of anything special or will any o-ring do? Had my car on the trailer for the clubmans at Taupo tomorrow and noticed coolant on the trailer deck. Fitted a water pump from a spare block but no seal so tried some hightemp loctite sealer but it didn't work so no racing tomorow

[l1ttle_d3vil]

pretty sure any sort of o-ring will do the trick.

they're just a PITA to get in there and stay there...

[lucasthefallen]

needs to be high temp rubber o-ring, and i use abit of rubber grease to hold the seal onto the waterpump