Need Help...No cone in front Wheel Cylinder to seat hose fitting

[Ziffer]

I am installing my front wheel cylinders (39-41 Lincoln) and there is no little cone down in the hole for the brake hose taper to seat against??? I read a post on another site that said you can buy the little cone and put it in but both of my local parts stores can't find anything. Can I buy just the cone? What is the proper name for it?

Thanks in advance for your help.

Z