[badboyin.bc]

hi, i"m a newbie here so heres my problem, my car is very hard to start when cold so after a little probing i found out that my spark plug exteriors where full of oil so i think my cylinder head cover is leaking around the spark plugs. my question is are the seals around the spark plugs o-rings or just gaskets? my parts store doesn't list them so i"m thinking there a dealer part only, but if they are o-rings i have a wide selection of them.
thanks