Suspension Strut bumper

Just got done installing front struts and now I realize I never installed a strut bumper. So I guess I could use the bumpers from the old struts but the problem is I already threw one of them away. Shouldn't the replacement struts have came with them? Or do you only get new bumpers when you replace the tubes/ bellows ? Since I only have one bumper, what are my options at this point ? Can I use one of the old mount kit rubber pieces instead ? Also since the top strut nuts are teflon lock nuts are they toast after removal ?

I see advance has at least one bellows with bumper in stock near me but I doubt they will have the teflon lock nuts but since the stock struts never had lock nuts I don't think reinstalling the nuts will,be that critical.