What size is the oil plug gasket?

[2009GT]

I noticed last time I changed the oil on my 2009 Vibe GT that the oil plug gasket was torn and so when I change it again next week I need to get another gasket. Do oil plug gaskets come in one size or is there a certain size I should be looking for?Thanks

[vibe2.1]

Why not just get Toyota part no. 9043012031? Dealer MSRP is $1.11. $0.85 at trdsparks.com.