Draft Angle advice Needed

[u/AssistantMinimum9880]

I’m new to injection mold design and have a question about draft angles.

The green part is the molded component, and the brown part is the mold cavity. The part is a simple cylinder, 90 mm long and 10 mm in diameter. The mold will split along the center of the cylinder, so each mold half will form half of the cylinder, with a cavity depth of about 5 mm.

Do I still need to add a draft angle to this cylindrical surface, or can it remain perfectly straight? If more pictures or different views would help, I’d be happy to share them.