1JZ water pump housing to rad hose seal help

[R33_JAY]

Hi all

Got a 1jz engined project nearly ready for mapping, need to put the top rad hose metal pipe, back onto the waterpump housing. Its connected by the little metal joiner, and has 2 rubber O ring seals that sit in the connector. Ive check all my local hardware stores, and when the o ring is fitted it either slips in the hole pretty easy with no real force, or the next size up is savagely tight and wont go in unles there is extreme pressure to fit it.

Went with the extreme option, got it in one end and its very tight, however it looks like the rubber seal is further in the housing in places which would suggest it has popped out the little O ring seats in the joiner.

What have you guys used to seal them? will the seal sat how it is do the job or am i likely to get a leak from it? Driving me nuts now


Thanks in advance for any help