Inlet manifold o ring query?

[simonster]

I'm replacing the hardened o rings which air seal the carb manifold to the head. Will I need the hi temp viton o rings or will the standard rubber ones be ok. I'm guessing the running temp of the head is about 200degs and I don't fancy removing burnt rubber once they gone past their temp range!!.  I've not tried to source them through DS as they aren't shown in their drop list and doubt they will supply.

[Trigger]

Go for the viton ones. Take the measurement and order them on fleabay cheap.

[Bryanj]

Same O ring as the rocker caps

[simonster]

Cheers guys. Have ordered them as suggested and yes just realised they match the rocker caps :-))