O ring seal (AC system) (2 required per car)

Hydrogenated nitrile butadiene rubber o ring used twice on the air conditioning system - used on the condenser end of the compressor-to-condenser hose (top of the condenser), and on the evaporator end of the condenser-to-evaporator hose. 2 of these are 2 of the 11 o-rings used on the air conditioning system (10 if you don't have the 110527 adapter hub fitted).